<Tr> <Th> 115 </Th> <Td> 23 </Td> <Td> "Lian Yu" </Td> <Td> Jesse Warn </Td> <Td> Wendy Mericle & Marc Guggenheim </Td> <Td> May 24, 2017 (2017 - 05 - 24) </Td> <Td> T27. 13223 </Td> <Td> 1.72 </Td> </Tr> <Tr> <Td_colspan="8"> Oliver recruits a Mirakuru-less and hate - free Slade Wilson . Harkness reveals his allegiance to Chase . Oliver's party frees Felicity, Thea, Curtis, and Samantha, trapping Evelyn . Oliver asks Malcolm to take Felicity's party to Chase's plane in order to escape and manages to free John, Rene, Dinah, and Quentin, who knocks Black Siren unconscious while Nyssa defeats Talia . Malcolm kills Harkness, but sacrifices himself by taking Thea's place on a tripped landmine, allowing Felicity's party to escape . They reach the plane, but learn that the whole island is rigged with C4, which will detonate if Chase dies . Oliver asks John to lead the others to Felicity's party and escape while Oliver captures Chase on a boat and frees William, who learns that his father is the Green Arrow . The plane is sabotaged, so Oliver tells the others to run to a ship on the eastern shore . Unsure of the others' fates, Chase kills himself in front of Oliver and William, causing the bombs to demolish Lian Yu . In flashbacks, Oliver kills Kovar and his men, reaches the boat in time and calls Moira on his way home . </Td> </Tr> <Table> <Tr> <Th> No . overall </Th> <Th> No. in season </Th> <Th> Title </Th> <Th> Directed by </Th> <Th> Written by </Th> <Th> Original air date </Th> <Th> Prod . code </Th> <Th> U.S. viewers (millions) </Th> </Tr> <Tr> <Th> 116 </Th> <Td> </Td> <Td> "Fallout" </Td> <Td> James Bamford </Td> <Td> Marc Guggenheim & Wendy Mericle </Td> <Td> October 12, 2017 (2017 - 10 - 12) </Td> <Td> T27. 13451 </Td> <Td> 1.52 </Td> </Tr> <Tr> <Td_colspan="8"> In flashbacks, Slade heads to the A.R.G.U.S. ship alone while the others take refuge in the plane . Samantha runs off to find William and Thea follows . John's right pectoral muscles are injured while rescuing Felicity . Oliver finds Thea in critical condition and a dying Samantha asks him to look after William . Dinah and Quentin are attacked by Black Siren, whom he shoots . She is later saved by an unknown man working for Cayden James . In the present, Thea is still comatose and William blames Oliver for Samantha's death . Black Siren and her mercenary team attack the SCPD station . During another confrontation, John's hesitation gets Rene hurt . Determining Black Siren will next attack City Hall, Team Arrow sets a trap . However, her gang instead attacks the hideout before being driven off by Team Arrow . Quentin's reluctance to harm "Laurel" further allows her to escape . Oliver arranges another hearing for Rene to reclaim his daughter . Curtis discovers that Black Siren stole a prototype T - sphere . Slade tells Oliver that he is traveling to Calgary to find his son, advising him to choose between vigilantism and William . Oliver and William reconcile slightly, but pictures of Oliver wearing the Green Arrow suit leak to the media . </Td> </Tr> <Tr> <Th> 117 </Th> <Td> </Td> <Td> "Tribute" </Td> <Td> Laura Belsey </Td> <Td> Story by: Adam Schwartz Teleplay by: Marc Guggenheim & Beth Schwartz </Td> <Td> October 19, 2017 (2017 - 10 - 19) </Td> <Td> T27. 13452 </Td> <Td> 1.51 </Td> </Tr> <Tr> <Td_colspan="8"> Oliver publicly denies being the Green Arrow, facing an investigation by FBI agent Samanda Watson along with William's concerns of losing him . Anatoli and his men kidnap a group of Markovian delegates, demanding a ransom . Believing Anatoli leaked the photo, Felicity and Curtis work on discrediting it while tracking the hostages, three of whom Team Arrow saves while Anatoli escapes with one . Anatoli tells Oliver that he needs to convince the Bratva that he is no longer friends with Oliver and is not weak, injecting the hostage with a toxin which will kill him soon . Detecting the toxin and acquiring the antidote, Oliver injects it into the hostage, but Anatoli kills him anyway . He escapes after telling Oliver that he did not leak the photo . The media acquires evidence from an "anonymous source" that it was faked, but Watson tells Oliver that she will continue her investigation . As John prepares to tell Oliver about his degenerative nerve damage, the latter convinces him to wear the Green Arrow mantle, deciding to choose William over vigilantism . </Td> </Tr> <Tr> <Th> 118 </Th> <Td> </Td> <Td> "Next of Kin" </Td> <Td> Kevin Tancharoen </Td> <Td> Speed Weed & Oscar Balderrama </Td> <Td> October 26, 2017 (2017 - 10 - 26) </Td> <Td> T27. 13453 </Td> <Td> 1.34 </Td> </Tr> <Tr> <Td_colspan="8"> Team Arrow arrests Faust, with John refusing to shoot arrows . The City Council begins drafting a tighter anti-vigilante bill . Telling Dinah that he has overcome his tremors, John is revealed to have leadership problems when rogue CIA operatives begin hunting down a former member in order to silence him . Rene asks Oliver to return to the team . The latter has Felicity help William with his mathematics test while convincing John of his competence . Team Arrow tracks down a rogue group of mercenaries led by Onyx Adams to a hotel and engages them, defeating them all and saving the civilians from a biological weapon . With no way to stop the bill, Oliver converts it to a city - wide referendum . Watson begins suspecting John, who receives an arrow - firing crossbow invented by Felicity and Curtis . Oliver resumes his relationship with her while John is revealed to be injecting drugs to control his tremors . </Td> </Tr> <Tr> <Th> 119 </Th> <Td> </Td> <Td> "Reversal" </Td> <Td> Gregory Smith </Td> <Td> Sarah Tarkoff & Emilio Ortega Aldrich </Td> <Td> November 2, 2017 (2017 - 11 - 02) </Td> <Td> T27. 13454 </Td> <Td> 1.33 </Td> </Tr> <Tr> <Td_colspan="8"> Black Siren begins killing seemingly unimportant individuals while Felicity is approached by Alena, who tells her that Cayden James is planning to cause hundreds of millions of casualties worldwide . They meet black market dealer "Amnesiac" to buy a "ghost drive ." Feeling concerned, Oliver intervenes and attacks the thugs, angering Felicity, who steals the drive . Team Arrow tracks down Black Siren to the Helix facility and discovers she is working for James, who tasks his men to kill Felicity and Alena, who is critically shot during the rescue by Team Arrow . Felicity learns that James has stolen the victims' fingerprints, necessary to enter the International Domain Name Directory (IDND), a global internet infrastructure hub . Believing that James intends to destroy the internet, Team Arrow attacks his party at the IDND, where Felicity manages to breach through the firewall to stop James' apparent attack . She adds Alena to her startup, calling it Helix and intending to mass produce her spinal implant . James is revealed to have intentionally lured Felicity into breaking the firewall so that he can have secret access and covered tracks . He provides Black Siren with a device to stop Curtis' trackers . Slade calls Oliver and asks for his help . </Td> </Tr> <Tr> <Th> 120 </Th> <Td> 5 </Td> <Td> "Deathstroke Returns" </Td> <Td> Joel Novoa </Td> <Td> Ben Sokolowski & Spiro Skentzos </Td> <Td> November 9, 2017 (2017 - 11 - 09) </Td> <Td> T27. 13455 </Td> <Td> 1.29 </Td> </Tr> <Tr> <Td_colspan="8"> Slade asks Oliver to help him find his son, who's being held in jail . The two meet up with an old acquaintance of Slade's, who provides them with the information they need . When they get to the prison, Slade instructs Oliver to find his son, Joe, then get him out of there, as he knows Joe will not want to see him, despite Oliver's objections . Slade engages the security, known as the Jackals, in combat, where he discovers his acquaintance is actually a member of their team . When Slade demands they release Joe, he reveals it's not that easy, as their boss is Joe himself . Dinah struggles to protect a politician from a sniper attack by Vigilante, as the politician supports the anti-vigilante bill . Dinah later unleashes her Canary Cry on Vigilante, removing his mask and revealing he is actually Dinah's old partner Vincent Sobel, thought long dead . He later attempts another assassination at a TV interview, but is once again met by Dinah and shot in the head by an officer . Vincent reveals the Particle Accelerator changed him as well and claims he did not tell Dinah he was alive because he had lost faith in their police work . Dinah watches helplessly as he disappears . </Td> </Tr> <Tr> <Th> 121 </Th> <Td> 6 </Td> <Td> "Promises Kept" </Td> <Td> Antonio Negret </Td> <Td> Oscar Balderrama & Rebecca Bellotto </Td> <Td> November 16, 2017 (2017 - 11 - 16) </Td> <Td> T27. 13456 </Td> <Td> 1.28 </Td> </Tr> <Tr> <Td_colspan="8"> Slade and Oliver continue to try and persuade Joe to leave with them, but Joe refuses, claiming that he saw his father kill someone before he was influenced by Mirakuru . Slade tries to explain that it was a paid hit, but Joe refuses to forgive him, stating that learning who his father truly was led him down this path . Joe and Slade end up fighting until Oliver steps in, after which Joe escapes but not before revealing the existence of his brother Grant . Slade tells Oliver he will continue to try and find both of his sons, but advises Oliver that he go back to his, not wanting Oliver to make the same mistakes he made . Meanwhile, Team Arrow eventually finds out about John's tremors, leading John to apologize to everyone . Curtis offers to help John the same way he helped Felicity when she was injured . John asks to have the night to think it over . </Td> </Tr> <Tr> <Th> 122 </Th> <Td> 7 </Td> <Td> "Thanksgiving" </Td> <Td> Gordon Verheul </Td> <Td> Wendy Mericle & Speed Weed </Td> <Td> November 23, 2017 (2017 - 11 - 23) </Td> <Td> T27. 13457 </Td> <Td> 1.09 </Td> </Tr> <Tr> <Td_colspan="8"> Oliver, Felicity, William and Quentin organize a Thanksgiving food drive to raise money for a new SCPD Precinct . Oliver is promptly arrested by FBI Agent Watson under charges of vigilantism for being the Green Arrow . James and Black Siren subsequently break out of prison, intent on causing chaos, since the Green Arrow is caught . Thankfully, Oliver's trial is delayed . When John gets injured in the field, Oliver suits up as the Green Arrow once again, with Team Arrow looking to stop a bomb planted by James and Black Siren at the stadium during a concert . They subsequently discover the bomb is fake and that the cops guarding the stadium are not cops, whom are swiftly taken out by Dinah, Curtis and Rene, but James and Black Siren escape . Oliver visits John in hospital and claims he will wear the hood until John has recovered, whereupon he can reclaim it . Thea wakes from her coma and reunites with Oliver, Felicity, John and William . </Td> </Tr> <Tr> <Th> 123 </Th> <Td> 8 </Td> <Td> "Crisis on Earth - X, Part 2" </Td> <Td> James Bamford </Td> <Td> Story by: Marc Guggenheim & Andrew Kreisberg Teleplay by: Wendy Mericle & Ben Sokolowski </Td> <Td> November 27, 2017 (2017 - 11 - 27) </Td> <Td> T27. 13458 </Td> <Td> 2.52 </Td> </Tr> <Tr> <Td_colspan="8"> <P> In S.T.A.R. Labs, a captured interdimensional villain from Earth - X, Prometheus - X, is revealed to be a parallel universe doppelgänger of Tommy Merlyn . After he cruelly taunts Oliver over his attachment to Earth - 1's Tommy, Prometheus - X commits suicide out of loyalty to Earth - X's Nazi regime . Prometheus - X's partners, Dark Arrow (Oliver's doppelgänger), Overgirl (Kara Danvers' doppelgänger), and Eobard Thawne steal a sublight generator, the Prism, from research company Dayton Optical Systems; Oliver, Barry, Kara, and the others believe that Dark Arrow seeks to build a neutron bomb with it to aid his conquest on Earth - 1 . After a series of battles, most of the heroes including Team Arrow are in captivity at S.T.A.R. Labs after the Nazi forces infiltrate it, and Oliver, Barry and his allies are abducted to Earth - X's concentration camp, but Kara is moved to S.T.A.R. Labs . Oliver is determined to kill Dark Arrow after his capture . The villains reveal that Overgirl is dying and Dark Arrow plans to use the Prism, charged by S.T.A.R. Labs' particle accelerator, to produce artificial red sunlight that would weaken both Kara and Overgirl's respective invulnerability, allowing a heart transplant for Overgirl but killing Kara in the process . </P> This episode continues a crossover event that begins on Supergirl season 3 episode 8, and concludes on The Flash season 4 episode 8 and Legends of Tomorrow season 3 episode 8 . </Td> </Tr> <Tr> <Th> 124 </Th> <Td> 9 </Td> <Td> "Irreconcilable Differences" </Td> <Td> Laura Belsey </Td> <Td> Beth Schwartz & Sarah Tarkoff </Td> <Td> December 7, 2017 (2017 - 12 - 07) </Td> <Td> T27. 13459 </Td> <Td> 1.30 </Td> </Tr> <Tr> <Td_colspan="8"> Oliver and Felicity celebrate their wedding with everyone . The case against Oliver intensifies when Quentin learns that a member of Team Arrow is testifying against him, causing Oliver to have the team tracked . Quentin is kidnapped by Black Siren and James . Dinah is discovered to be meeting with Vincent, and tensions grow in the team until Rene admits he is the one testifying against Oliver . He explains Watson cornered him with evidence that he is Wild Dog, and if he did not testify, he would never be able to see his daughter again . Oliver briefly evicts Rene from the team, but the entire team puts aside any differences to rescue Quentin . Black Siren willingly allows Quentin to escape once they are outside . Oliver permanently ousts Rene for abandoning the primary mission to go looking for Lance on his own, violating Oliver's trust again . Rene is later reunited with his daughter, while Dinah and Curtis leave Team Arrow, unable to trust Oliver, John and Felicity . Through a hidden camera, Oliver, John and Felicity are shown being monitored by the cabal of James, his second in command Boots, Black Siren, Anatoli, Vincent and Ricardo Diaz . </Td> </Tr> <Tr> <Th> 125 </Th> <Td> 10 </Td> <Td> "Divided" </Td> <Td> James Bamford </Td> <Td> Ben Sokolowski & Emilio Ortega Aldrich </Td> <Td> January 18, 2018 (2018 - 01 - 18) </Td> <Td> T27. 13460 </Td> <Td> 1.38 </Td> </Tr> <Tr> <Td_colspan="8"> Oliver continues being the Green Arrow while refusing to have Rene, Dinah, and Curtis help him, while Felicity and Curtis struggle to cure John of his tremors, in the process discovering that their hideout has been bugged forcing them to relocate to A.R.G.U.S. Oliver once again faces Cayden James, discovering that he has a cabal at his command . Dinah spends time with Vincent before discovering he has allied with Cayden James and attempts to arrest him before being overpowered . After his fight with Cayden James's Cabal, Oliver, Felicity, and John discover that in order to win, they need to bring the team back together . Oliver apologizes to Rene, Dinah and Curtis, but despite his apology, they refuse to return to the team . Instead, they decide to start their own team, with Oliver wishing them luck . Curtis shows Dinah and Rene their new hideout . </Td> </Tr> <Tr> <Th> 126 </Th> <Td> 11 </Td> <Td> "We Fall" </Td> <Td> Wendey Stanzler </Td> <Td> Speed Weed & Spiro Skentzos </Td> <Td> January 25, 2018 (2018 - 01 - 25) </Td> <Td> T27. 13461 </Td> <Td> 1.38 </Td> </Tr> <Tr> <Td_colspan="8"> Cayden James attacks the city's critical Internet infrastructure, causing numerous casualties including police captain Frank Pike, before demanding ransom payment of $10 million dollars a day from Oliver to prevent a deadlier attack from happening . James reveals details of his vendetta against Oliver; a misfired arrow believed was from the Green Arrow killed his son Owen a year ago . However, Oliver knows that he is not responsible because he was in Hub City at the time, therefore there is another suspect . Vincent claims that he is undercover with James' cabal, and he gives Curtis, Rene, and Dinah some Intel . When one of James' attacks endangers William and his class during a fieldtrip, Oliver is forced to reveal to his son that he resumed being the Green Arrow when rescuing him . Oliver and Quentin set up safe zones for citizens following the attacks, eventually James' cabal targets them . Oliver and his former team put aside of their differences and stop James' party's attack on the safe zones' occupants . Despite William being hurt by Oliver's lies, Felicity helps William to see it was for good intentions and gets him to accept his father's duty . Unable to find proof of his innocence before the deadline, Oliver gives into James' demands to buy time to find it . </Td> </Tr> <Tr> <Th> 127 </Th> <Td> 12 </Td> <Td> "All for Nothing" </Td> <Td> Mairzee Almas </Td> <Td> Beth Schwartz & Oscar Balderrama </Td> <Td> February 1, 2018 (2018 - 02 - 01) </Td> <Td> T27. 13462 </Td> <Td> 1.24 </Td> </Tr> <Tr> <Td_colspan="8"> Oliver is almost out of money to pay Cayden James . Fearing he will detonate the bomb, Vince, who infiltrated James' organization, agrees to download data that could lead the two vigilante teams to find where the bomb is located . Despite being successful in transmitting the data to Felicty, he is identified as the traitor, caught, and tortured by Anatoli . The location of the bomb is revealed, but Dinah, Curtis, and Rene decide not to follow Oliver in order to save Vince . However, James anticipates this and used Vince as bait . Dinah is immobilized because of rubble collapsing on top of her and is forced to watch as Black Siren executes Vince . Lacking the manpower, Green Arrow and Spartan are unable to retrieve the bomb before it's moved to a new location . However, they retrieve the falsified proof that shows Green Arrow killing James' son; the video was edited using the same technology that was used to forge the picture that exposed Oliver as the Green Arrow, implying another adversary is operating behind the scenes . </Td> </Tr> <Tr> <Th> 128 </Th> <Td> 13 </Td> <Td> "The Devil's Greatest Trick" </Td> <Td> JJ Makaro </Td> <Td> Sarah Tarkoff & Emilio Ortega Aldrich </Td> <Td> February 8, 2018 (2018 - 02 - 08) </Td> <Td> T27. 13463 </Td> <Td> 1.30 </Td> </Tr> <Tr> <Td_colspan="8"> Cayden James threatens to set the bomb off at midnight . Alena and Felicity are able to decode the video of Oliver killing Cayden's son, proving it was someone else, and clearing Oliver . With help from Barry Allen, Oliver is able to delay James from leaving town by showing him the new evidence . James concludes that it was someone in his group who is behind it and asks for his former allies to be brought to him or he will set off the bomb . The team brings Laurel, Diaz and Anatoli to James, but Laurel says she was behind his son's death and her actions allow everyone but James to escape . Diaz approaches Cayden in custody, revealing himself as the person responsible for the death of his son and that he has the new police captain on his payroll, killing Cayden before he leaves . </Td> </Tr> <Tr> <Th> 129 </Th> <Td> 14 </Td> <Td> "Collision Course" </Td> <Td> Ken Shane </Td> <Td> Oscar Balderrama & Rebecca Bellotto </Td> <Td> March 1, 2018 (2018 - 03 - 01) </Td> <Td> T27. 13464 </Td> <Td> 1.11 </Td> </Tr> <Tr> <Td_colspan="8"> Dinah, Curtis and Rene analyse the latest place Laurel was seen and manage to determine that she was dragged away by somebody . It turns out Quentin took Laurel to a secure cabin to allow her to heal, which Thea eventually finds out and informs Oliver . Oliver demands the return of the city's money, which Laurel promises, if they get her out of the country . Curtis hacks the chip preventing John's tremors, allowing them to track down Oliver, John and Felicity and hence find Laurel, though Quentin refuses to let Dinah kill Laurel . The two teams fight, with Rene eventually getting injured, and Oliver throwing a device that prohibits Dinah's scream, allowing Laurel to incapacitate them with her own scream and escape . At the hospital, when John and Felicity come to see Rene, Curtis and Dinah turn them away, saying they want nothing to do with them anymore . At the edge of the city, Laurel begs a van driver to help her . </Td> </Tr> <Tr> <Th> 130 </Th> <Td> 15 </Td> <Td> "Doppelganger" </Td> <Td> Kristin Windell </Td> <Td> Story by: Christos Gage & Ruth Fletcher Gage Teleplay by: Speed Weed </Td> <Td> March 8, 2018 (2018 - 03 - 08) </Td> <Td> T27. 13465 </Td> <Td> 1.28 </Td> </Tr> <Tr> <Td_colspan="8"> Laurel appears at City Hall, revealing her story about how she was kidnapped and held against her will . Oliver and Thea find out that Ricardo is keeping a hostage, which is revealed to be former Team Arrow member Roy Harper, prompting Thea to once again assume the mantel of Speedy to try and rescue Roy . Dinah, upon hearing of the situation, says she is willing to help out this once, but Oliver refuses, saying if she does not trust him, he does not trust her . Oliver and John eventually take on Ricardo and his minions, who escape, but they do manage to rescue Roy . Oliver goes to see Laurel, who claims she cannot change who she is, but she will try to be good, if Oliver gives her the space to do so, which Oliver agrees to . But when he leaves, Black Siren receives a message from Diaz and smiles, implying that she works with him . Roy and Thea spend an evening together, where they are observed by a woman who reports that the heir of Ra's al Ghul has been located . </Td> </Tr> <Tr> <Th> 131 </Th> <Td> 16 </Td> <Td> "The Thanatos Guild" </Td> <Td> Joel Novoa </Td> <Td> Beth Schwartz & Ben Sokolowski </Td> <Td> March 29, 2018 (2018 - 03 - 29) </Td> <Td> T27. 13466 </Td> <Td> 1.12 </Td> </Tr> <Tr> <Td_colspan="8"> Nyssa comes to Star City for Thea, claiming that a splinter group from the League of Assassins, The Thanatos Guild, lead by a woman called Athena, are coming for her for the location of a map that Malcolm supposedly knew the location of . Thea reluctantly agrees to help Nyssa, but claims she is leaving afterward . Team Arrow eventually find the box containing the map and use mathematics to unlock it, only for the map to be blank when opened, but Felicity helps to reveal the hidden markers underneath and discovers that it contains locations to other Lazarus Pits . Dinah grows suspicious of her superior in the police, suspecting that she might be peddling Diaz's drugs . Thea talks to Oliver about handing the Green Arrow mantle back to John, but Oliver worries that the current circumstances may be a little too much for John at the moment . Thea, Roy and Nyssa eventually depart to destroy the Lazarus Pits and Oliver says goodbye . </Td> </Tr> <Tr> <Th> 132 </Th> <Td> 17 </Td> <Td> "Brothers in Arms" </Td> <Td> Mark Bunting </Td> <Td> Sarah Tarkoff & Jeane Wong </Td> <Td> April 5, 2018 (2018 - 04 - 05) </Td> <Td> T27. 13467 </Td> <Td> 0.87 </Td> </Tr> <Tr> <Td_colspan="8"> Dinah has Anatoly arrested but Captain Hill and DA Sam Armand force his release . Oliver confronts them with proof that they are working for Diaz and fires them when they affirm that they cannot accept his protection when faced with the threat posed by Diaz . Oliver apologizes to John about not giving him the suit, but after John questions his leadership skills and motives for continuing as the Green Arrow while Oliver counters that he has accepted his past mistakes, the two engage in an argument that leads to a fight . With Diaz pushing Vertigo through the city, Oliver and John work to destroy the shipment, while Curtis reveals his alter - ego to his new boyfriend, Nick Anastas . John decides to leave the team following the fight, leaving Oliver and Felicity as the final two members . Hill fires Dinah and the rest of the clean cops, forcing Nick to realize that vigilantism is the only path forward . Armand claims that Oliver obstructed justice, which is grounds for impeachment . Laurel learns that Diaz has one more vial of Vertigo and kisses him . </Td> </Tr> <Tr> <Th> 133 </Th> <Td> 18 </Td> <Td> "Fundamentals" </Td> <Td> Ben Bray </Td> <Td> Speed Weed & Emilio Ortega Aldrich </Td> <Td> April 12, 2018 (2018 - 04 - 12) </Td> <Td> T27. 13468 </Td> <Td> 1.06 </Td> </Tr> <Tr> <Td_colspan="8"> With Oliver's impeachment hearing beginning, he lashes out at Felicity and William, causing the former to request a separation . Oliver realizes he has been dosed with Vertigo, and he begins hallucinating Adrian Chase, who torments him with reminders of his past failures . Oliver realizes that he never should have formed a Team Arrow, allowing his loved ones to make him forget about his original mission . Learning Diaz's location, Oliver dons his original hood and attempts to take on the corrupt officers by himself . Felicity is able to bring Oliver back to his senses, revealing she never requested a separation . Oliver and Felicity escape before Diaz and his men can shoot them . Later, Oliver and William reconcile . Oliver is impeached, and Quentin becomes the new Mayor of Star City . Diaz tells Laurel that since Oliver has been impeached, it is time to inform crime families across the country that Star City is open for business . </Td> </Tr> <Tr> <Th> 134 </Th> <Td> 19 </Td> <Td> "The Dragon" </Td> <Td> Gordon Verheul </Td> <Td> Spiro Skentzos & Elizabeth Kim </Td> <Td> April 19, 2018 (2018 - 04 - 19) </Td> <Td> T27. 13469 </Td> <Td> 0.96 </Td> </Tr> <Tr> <Td_colspan="8"> A younger Diaz is shown in an orphanage being harassed by a bully . In the present, Diaz starts the next phase of his plan which is to join a criminal organization called The Quadrant . But one of the four leaders of the group doesn't think that Diaz is worthy enough, thinking of him as a street thug, and tries to have his son kill him . With Laurel's help, he wages a small war on the group, killing both the man and his son, then taking his seat at the table . Later on, Diaz tracks down the man who bullied him as a child, and sets him on fire as Laurel watches uncomfortably . Meanwhile, Felicity & Curtis work together again on their Helix project, while Oliver works alone in Star City . An explosion happens as Oliver is fighting Diaz's men, leaving no survivors . Felicity fearing for Oliver's life returns home to find him safe and sound, who promises her that he will never leave her . </Td> </Tr> <Tr> <Th> 135 </Th> <Td> 20 </Td> <Td> "Shifting Allegiances" </Td> <Td> Alexandra La Roche </Td> <Td> Wendy Mericle & Rebecca Bellotto </Td> <Td> April 26, 2018 (2018 - 04 - 26) </Td> <Td> T27. 13470 </Td> <Td> 0.87 </Td> </Tr> <Tr> <Td_colspan="8"> Oliver pays a debt to Anatoli's rival in Russia, so that Anatoli will be able to go home . Oliver appeals to him, reminding him of his honor and their friendship . Anatoli betrays him, chains him, and later on takes him to see Diaz . Convinced to fight fairly by Anatoli, Diaz and Oliver square off one on one, with the loser to leave the city . Oliver bests Diaz, only for him to stab him with a knife . Later on, Diaz tells Oliver he's having his trial moved up and has him arrested . Meanwhile, Rene returns home, but is still affected by when he was shot . Dinah and Curtis team up with John and ARGUS to stop a shipment of weapons by The Quadrant and are successful . As the new mayor, Quentin is approached by Diaz to sign a paper that will grant him some property in the city . Quentin refuses at first, but he eventually changes his mind out of fear for Laurel's safety after she expresses concerns about how dangerous he is . </Td> </Tr> <Tr> <Th> 136 </Th> <Td> 21 </Td> <Td> "Docket No. 11 - 19 - 41 - 73" </Td> <Td> Andi Armaganian </Td> <Td> Story by: Marc Guggenheim Teleplay by: Ubah Mohamed & Tyron B. Carter </Td> <Td> May 3, 2018 (2018 - 05 - 03) </Td> <Td> T27. 13471 </Td> <Td> 1.10 </Td> </Tr> <Tr> <Td_colspan="8"> Several witnesses are called at Oliver's trial to testify about the identity of the Green Arrow including John, Dinah, Dr. Schwartz, Rene, and Felicity . Diaz coerces Rene into saying Oliver is the Green Arrow at trial by threatening his daughter in front of him . After Oliver takes the stand, the Green Arrow crashes through the skylight, revealing himself to be Tommy Merlyn back from the dead . Tommy testifies that he is really the Arrow and is taken into custody . When being saved from Diaz's men by John and Rene, he is revealed to be Christopher Chance, the Human Target . Laurel takes the stand and, despite being threatened by Diaz earlier, testifies that Tommy is the real Green Arrow . Oliver is found guilty, proving the assumption that both the judge and the jury were in Diaz's pocket . Oliver's lawyer moves for a judgment notwithstanding verdict and the judge surprisingly agrees . Oliver returns to the lair and discovers that Chance switched places with the judge during jury deliberation . Oliver and Rene reconcile . Diaz kills the real judge just before Laurel appears and attacks him and his men, momentarily downing Diaz, before he takes her captive, telling her that he plans to kill Oliver and everyone he cares about . </Td> </Tr> <Tr> <Th> 137 </Th> <Td> 22 </Td> <Td> "The Ties That Bind" </Td> <Td> Tara Miele </Td> <Td> Ben Sokolowski & Oscar Balderrama </Td> <Td> May 10, 2018 (2018 - 05 - 10) </Td> <Td> T27. 13472 </Td> <Td> 1.00 </Td> </Tr> <Tr> <Td_colspan="8"> Diaz orchestrates attacks against Team Arrow and their loved ones; most escape unscathed but Curtis's boyfriend Nick is seriously injured . They reunite at the New Team Arrow's bunker where they watch as Diaz' men destroy Original Team Arrow's bunker . With Anatoly's help, Oliver ambushes Diaz, but he escapes, severely wounding Curtis . The team realizes Diaz was protecting a device containing potentially important data, and send Lyla into the SCPD headquarters to hack it . Felicity discovers it is an encrypted list of everyone on Diaz's payroll and starts attempting to decode it . Diaz kills one of the Quadrant leaders, assuming she gave Team Arrow the intel about his convoy . He attacks the new bunker, fights with and nearly kills Oliver, who triggers explosives installed as a fail - safe against intruders . He and Felicity escape, but the still - encrypted data is lost . Diaz meets with the remaining two Quadrant leaders, kills one and makes the other accept him as the head of the organization . Oliver turns to Agent Watson for help; she agrees provided he admits to her that he is the Green Arrow . </Td> </Tr> <Tr> <Th> 138 </Th> <Td> 23 </Td> <Td> "Life Sentence" </Td> <Td> James Bamford </Td> <Td> Wendy Mericle & Marc Guggenheim </Td> <Td> May 17, 2018 (2018 - 05 - 17) </Td> <Td> T27. 13473 </Td> <Td> 1.35 </Td> </Tr> <Tr> <Td_colspan="8"> Team Arrow mount a final attack on Diaz and while Diaz manages to escape, Oliver obtains the list of everyone on his payroll, liberating Star City . During the attack, Quentin takes a bullet for Laurel and ends up in the hospital . The team comes to support him, including Laurel and a surprise visit from Sara . However, Quentin suffers a seizure during surgery and dies . Oliver manages to get the team immunity from the FBI and police in exchange for handing himself in . Agent Watson promises the team that the FBI will stay in Star City to deal with Diaz, before arresting Oliver . Oliver finally admits to the public that he is the Green Arrow, and urges his friends and allies to continue fighting to save the city . In prison, Oliver walks to his cell, with criminals acting violently towards him now that they know he is the Green Arrow . </Td> </Tr> </Table> <Tr> <Th> No . overall </Th> <Th> No. in season </Th> <Th> Title </Th> <Th> Directed by </Th> <Th> Written by </Th> <Th> Original air date </Th> <Th> Prod . code </Th> <Th> U.S. viewers (millions) </Th> </Tr>

When does arrow season 6 episode 21 air