<Tr> <Th> 71 </Th> <Td> 25 </Td> <Td> "Scorp Family Robinson" </Td> <Td> Sam Hill </Td> <Td> Nick Santora & Nicholas Wootton </Td> <Td> May 15, 2017 (2017 - 05 - 15) </Td> <Td> 7.89 </Td> </Tr> <Tr> <Td_colspan="7"> Three weeks after crashing on a deserted island, the team is divided on plans to get rescued before the monsoon season, so the team splits up . Walter thinks a magnetic field change can get them home, while Toby tries to make a raft out of newly discovered oil drums . Meanwhile, a long - bearded Sylvester is losing his mind in the bunker with his pet chameleon . Everyone works together to rescue Ralph and Scotty when they are smothered in a sand pit created by an exploding copper wire experiment that results in an electrical disturbance, signalling a plane to fly above them . They spell out SOS on the sand and are saved . Back home safe, Paige and Walter are finally left alone and they share a steamy moment . </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> U.S. viewers (millions) </Th> </Tr> <Tr> <Th> 72 </Th> <Td> </Td> <Td> "Extinction" </Td> <Td> Sam Hill </Td> <Td> Nick Santora & Nicholas Wootton </Td> <Td> September 25, 2017 (2017 - 09 - 25) </Td> <Td> 5.75 </Td> </Tr> <Tr> <Td_colspan="7"> Walter gets a call from ex-Scorpion member and old nemesis Mark Collins . While in prison, Mark discovered an extinction event from a temperature shift in Northern Norway . In order to prevent mass extinction, the team has to work with the mad genius to stop methane from leaking through cracks in the ice caused by an earthquake . However, methane geysers are created during an aftershock and, if not plugged up, will start warming the earth's atmosphere within hours instead of weeks . During the mission, Walter and Paige awkwardly resume their new relationship at work, causing Walter to burst out into song and dance . Also, Sly questions his lack of achievements after seeing his short obituary in a shrine dedicated to him at the Warlock's Chest . </Td> </Tr> <Tr> <Th> 73 </Th> <Td> </Td> <Td> "More Extinction" </Td> <Td> Sam Hill </Td> <Td> Nick Santora & Nicholas Wootton </Td> <Td> October 2, 2017 (2017 - 10 - 02) </Td> <Td> 5.23 </Td> </Tr> <Tr> <Td_colspan="7"> With the new Homeland Security director refusing to help, Team Scorpion and Mark Collins are forced to come up with a plan to save the world on their own . After learning of a nearby luxury resort for Russian military higher - ups, the team decides to raid it for an experimental assault helicopter and the supplies they need to perform cloud seeding with the intention to cause it to snow and freeze over the crevices . Despite some issues, the team succeeds in stealing the necessary supplies and successfully freezes over the methane hotspots, buying the needed time for specialists to come with methane - eating bacteria to remove the threat completely . However, Collins tricks Cabe and is able to escape . In the aftermath, the team comes to realize that Collins had planned all along to use the extinction event to escape and Cabe is arrested for instigating Collins' escape . Walter and Paige, after experiencing doubts about their relationship, reconcile and Happy, revealing she recovered his old wedding ring earlier, makes Sly a wedding ring of bandage fragments within a plastic mold . </Td> </Tr> <Tr> <Th> 74 </Th> <Td> </Td> <Td> "Grow a Deer, A Female Deer" </Td> <Td> Milan Cheylov </Td> <Td> David Foster & Nick Santora </Td> <Td> October 9, 2017 (2017 - 10 - 09) </Td> <Td> 4.82 </Td> </Tr> <Tr> <Td_colspan="7"> After learning of Cabe's arrest from Ally, Scorpion pools their funds to pay his $500,000 bail, angering Cabe . Now in desperate need of funds, Scorpion agrees to fly to Africa to stop a poacher cabal from targeting rhinos . During the mission, Walter's guilt causes him to channel Cabe's mannerisms to nearly disastrous effect . After locating the correct valley, Scorpion rescues a deer from a poacher . The deer, which is of a nearly - extinct species, is severely injured and pregnant . The team is forced to move the baby into an artificial womb and to transport both mother and baby to safety while chased by poachers . The team succeeds in saving both mother and child while Ralph is able to decrypt the satellite phone of one of the poachers, identifying the entire organization . With the help of Ralph, Cabe realizes how selfish he's being, while Ralph develops a crush on Sly's new intern, Patty . </Td> </Tr> <Tr> <Th> 75 </Th> <Td> </Td> <Td> "Nuke Kids on the Block" </Td> <Td> Elodie Keene </Td> <Td> Paul Grellong & Nicholas Wootton </Td> <Td> October 16, 2017 (2017 - 10 - 16) </Td> <Td> 4.84 </Td> </Tr> <Tr> <Td_colspan="7"> <Table> <Tr> <Td> </Td> <Td> This episode's plot summary may be too long or excessively detailed . Please help improve it by removing unnecessary details and making it more concise . (December 2017) (Learn how and when to remove this template message) </Td> </Tr> </Table> After Paige calls Happy out on third - wheeling all of her and Walter's dates, tension grows between the two of them . Scorpion is called in to decommission a nuclear missile, but Happy accidentally drops a wrench and punctures the missile's fuel tank . With four hours until help arrives and the fuel vapors threatening to cause the warhead to detonate, Scorpion comes up with a plan to use a 3D printer and neon gas to create a plug for the leak . A mistake in the gas they receive causes the situation to worsen, so Walter decides to use an explosion to harmlessly launch the warhead into the countryside, where it can safely be recovered later . While the launch is successful, the vapors arm the warhead . At the last second, Happy disarms it and Scorpion leaves the Air Force to clean up the mess . At the same time, Sly's new intern Patty struggles to save the local science club . Inspired by the events in the missile silo, Sly finds a way to save the city plenty of money to fund the science club . Sly chooses to become Cabe's lawyer due to their problems in finding him one . Happy announces that she wants to have a baby with Toby, while Walter admits his insecurities about Paige growing bored with their relationship . </Td> </Tr> <Tr> <Th> 76 </Th> <Td> 5 </Td> <Td> "Sci Hard" </Td> <Td> Dwight H. Little </Td> <Td> Rob Pearlstein & Nick Santora </Td> <Td> October 23, 2017 (2017 - 10 - 23) </Td> <Td> 5.15 </Td> </Tr> <Tr> <Td_colspan="7"> Walter, Paige, Cabe, Toby, and Happy visit a technology conference in Los Angeles while Sly takes the Vermont bar exam . While at the conference, which features Scorpion's old acquaintance Richard Elia, the conference is taken over by masked men, resulting in Paige and Walter being taken hostage . As the others try to foil a clever bank robbery scheme, Sly is forced to interrupt his test to help, observed by his test proctor to monitor for possible cheating . Cabe is able to overpower two of the villains and aid Walter and Sly in tricking the remaining two into thinking they have gotten their money . However, Toby and Happy's attempt to help gets them arrested by a suspicious police detective . In the end, Cabe captures the robbers and Toby and Happy are exonerated . Sly's efforts to help results in his only answering about seventy percent of the questions before running out of time . To Sly's shock, he later finds out that the sympathetic proctor rushed his test results through and he passed, meaning that Sly can act as Cabe's lawyer in his upcoming trial . </Td> </Tr> <Tr> <Th> 77 </Th> <Td> 6 </Td> <Td> "Queen Scary" </Td> <Td> Omar Madha </Td> <Td> Adam Higgs & Nicholas Wootton </Td> <Td> October 30, 2017 (2017 - 10 - 30) </Td> <Td> 4.93 </Td> </Tr> <Tr> <Td_colspan="7"> The team meets Dave who offers them a job to prove the existence of ghosts on the Queen Mary for his documentary . Due to the financial problems that the team currently have, they accepted the job though Walter stays behind due to his skepticism . During the mission, the team discovers that the Queen Mary is being used to house an antenna guiding unmanned ships . Due to a malfunction, one such ship ends up a disastrous collision course with a refinery and the team's attempts to stop it make the situation worse . Finally, Walter manages to board the ship, but is unable to stop it directly due to its damaged electronics . Instead, the team manages to use the ship's sonar and the Queen Mary's PA system to create a sonic wall that stops the ship feet from the refinery . Though the ghosts were debunked, Dave still produces a heavily edited version of the documentary . At the end of the episode, Toby manages to get Cabe to open up about his upcoming trial and Cabe finally admits that he's worried . </Td> </Tr> <Tr> <Th> 78 </Th> <Td> 7 </Td> <Td> "Go With the Flo (rence)" </Td> <Td> Sam Hill </Td> <Td> Kevin J. Hynes & Nick Santora </Td> <Td> November 6, 2017 (2017 - 11 - 06) </Td> <Td> 5.18 </Td> </Tr> <Tr> <Th> 79 </Th> <Td> 8 </Td> <Td> "Faire is Foul" </Td> <Td> Sanford Bookstaver </Td> <Td> Scott Sullivan </Td> <Td> November 13, 2017 (2017 - 11 - 13) </Td> <Td> 4.74 </Td> </Tr> <Tr> <Th> 80 </Th> <Td> 9 </Td> <Td> "It's Raining Men (of War)" </Td> <Td> Antonio Negret </Td> <Td> Kim Rome & Nicholas Wootton </Td> <Td> November 20, 2017 (2017 - 11 - 20) </Td> <Td> 5.13 </Td> </Tr> <Tr> <Th> 81 </Th> <Td> 10 </Td> <Td> "Crime Every Mountain" </Td> <Td> Sam Hill </Td> <Td> Aadrita Mukerji & Nick Santora </Td> <Td> November 27, 2017 (2017 - 11 - 27) </Td> <Td> 5.50 </Td> </Tr> <Tr> <Td_colspan="7"> While testing a new winch, Scorpion witnesses a plane go down and attempts to help the man flying the plane save his children . The team learns too late that the man and his daughter are drug runners and get taken captive, ultimately resulting in Walter and Paige being trapped in a small cave . Toby manages to rescue the two and they are able to outfox and capture the pair . The incident causes Happy to experience some doubts about having children after seeing the criminal family, but she is soothed by Toby . At the same time, Cabe attempts to capture Mark Collins with Sly's help after they receive a lead . However, it is just a trap set by Collins to frame Cabe for taking a $50,000 bribe . With Cabe's situation worsening, Walter attempts to distance himself from Cabe, leading to some strain between him and Paige . In the end, Sly decides to request a bench trial instead of a jury trial so that Cabe's guilt will only be determined by an experienced judge . While helping prepare for the trial, Walter reconciles with Cabe . </Td> </Tr> <Tr> <Th> 82 </Th> <Td> 11 </Td> <Td> "Who Let the Dog Out (' Cause Now It's Stuck In a Cistern)" </Td> <Td> Omar Madha </Td> <Td> David Foster & Nick Santora </Td> <Td> December 11, 2017 (2017 - 12 - 11) </Td> <Td> 5.92 </Td> </Tr> <Tr> <Td_colspan="7"> Joined by a new handler from Homeland Security and Florence, Scorpion sets out to rescue a diabetic dog trapped underground with only a short time to live . The team manages to save the dog and their handler decides to report to Homeland Security that the team is unconventional but effective and gives his support in allowing the team to continue to operate . At the same time, Cabe goes on trial for aiding and abetting Mark Collins' escape and taking a bribe . Cabe's trial is a bench trial overseen by a judge with a history of handing down harsh sentences . The judge rejects most of Sly's defenses making it seem like Cabe will be convicted . However, Sly has a last minute idea using an obscure case from 1804 and maritime law . Ultimately, the judge dismisses the bribery charges based on evidence presented by Sly of Collins' bank hacking to frame Cabe . Based on maritime law, Cabe is exonerated for helping Collins escape and is released . At the end of the episode, Sly helps Toby and Florence deal with charges of their own relating to helping him save Cabe and Cabe gives each member of the team a memento with personal value to show their importance to him . </Td> </Tr> <Tr> <Th> 83 </Th> <Td> 12 </Td> <Td> "A Christmas Car - Roll" </Td> <Td> LeVar Burton </Td> <Td> Paul Grellong & Nicholas Wootton </Td> <Td> December 18, 2017 (2017 - 12 - 18) </Td> <Td> 5.35 </Td> </Tr> <Tr> <Td_colspan="7"> While the rest of Scorpion plans to enjoy the Christmas holiday, Walter continues to work resulting in an life - threatening fall . While Scorpion attempts to save Walter his unconscious self experiences a dream world where Scorpion was never formed . As a result, several of the disasters they prevented have happened . In Walter's dream, he is married to Florence, Paige owns a chain of restaurants, Cabe is the Chief of the LAPD, Sly owns a video game company, Toby is a famous motivational speaker, Happy runs a podcast on rare cars and Ralph is his former silent genius self . In order to save himself, represented by a doppelganger of Walter trapped in a car accident, Walter is forced to bring together the team . Scorpion is able to save Walter's life and he awakens in the hospital in the real world . The dream gives Walter a new perspective on the team while his dream marriage to Florence appears to make Walter intrigued . </Td> </Tr> <Tr> <Th> 84 </Th> <Td> 13 </Td> <Td> "The Bunker Games" </Td> <Td> Milan Cheylov </Td> <Td> Rob Pearlstein </Td> <Td> January 15, 2018 (2018 - 01 - 15) </Td> <Td> 5.62 </Td> </Tr> <Tr> <Td_colspan="7"> Scorpion is hired to check out the AI system on a doomsday bunker . Due to Cabe's upcoming physical, Paige remains behind with him to help train while Toby is refused for the job by the owners . To the team's surprise, they are greeted by Toby's rival Quincy Berkstead and his wife Amy who is Toby's ex-fiancé . When Toby follows the rest of the team out of suspicion, the bunker's AI Dorie labels Toby as a threat and locks the team, Quincy and Amy in the bunker while Cabe and Paige try desperately to save them . With time running out until Dorie releases a deadly gas, the team implements a plan that releases them from the bunker and locks Dorie in an unsolvable challenge . During the mission, Happy grows jealous of Amy who appears to be more beautiful and successful than her, but the two bond . Quincy's cowardice causes Amy to leave him in the end . At the same time, Walter remains freaked out by his dream about being married to Florence and attempts to maintain his distance from her on the mission . While Florence takes the news well when Walter explains, Paige does not . </Td> </Tr> <Tr> <Th> 85 </Th> <Td> 14 </Td> <Td> "Lighthouse of the Rising Sun" </Td> <Td> Sam Hill </Td> <Td> Adam Higgs </Td> <Td> January 22, 2018 (2018 - 01 - 22) </Td> <Td> 5.23 </Td> </Tr> <Tr> <Td_colspan="7"> After a solar flare knocks out power and communications in Southern California, Scorpion, Ralph, Cabe's girlfriend Allie, Sly's intern Patty and Sly's science club team up together to save two teenagers trapped on a plane with no way of landing . Cabe, Allie, Toby and Happy reactivate the lighthouse both couples went to for a romantic weekend away to help guide the teenagers in while Paige and Sly break into a flight school to get the plane's specifications . However, the plane suffers damage and is unable to land and a controlled crash - landing proves to be impossible as well . With the help of the science club, Walter comes up with a plan for the teens to jump into a massive net, saving their lives . During the crisis, Cabe encourages the teens to admit their love for each other while he finally does the same with Allie who reciprocates his feelings . Throughout the crisis, Ralph continues his efforts to impress Patty and succeeds to the point that she requests his help in running Sly's reelection campaign . Due to Walter's dream, Paige is harsh with Florence while giving her advice to get investors . Paige's advice proves to work and Paige makes amends with Florence and Walter though a planned romantic night suffers an unfortunate interruption . </Td> </Tr> <Tr> <Th> 86 </Th> <Td> 15 </Td> <Td> "Wave Goodbye" </Td> <Td> Jeff T. Thomas </Td> <Td> Kevin J. Hynes </Td> <Td> January 29, 2018 (2018 - 01 - 29) </Td> <Td> 5.82 </Td> </Tr> <Tr> <Td_colspan="7"> <Table> <Tr> <Td> </Td> <Td> This episode's plot summary may be too long or excessively detailed . Please help improve it by removing unnecessary details and making it more concise . (February 2018) (Learn how and when to remove this template message) </Td> </Tr> </Table> Scorpion is called to Fuente Roja, Mexico to repair an earthquake damaged reactor of a nuclear power station . Sly stays behind to get an autograph from his favorite author and Toby claims back pains . As the team prepares to repair the reactor, another (9.1) earthquake at sea triggers a massive tsunami that threatens the town . Able to affect repairs but unable to leave the town in time, Scorpion enacts a plan to dissipate the tsunami before it can reach land and the remaining towns people . The team is able to stop the tsunami and save the town . At the same time, Toby's ex-fiancée Amy asks him to help her recover her identity previously stolen and sold by Quincy Berkstead following the recent bunker debacle . Through a series of deals, Toby tracks Amy's stolen identity to his old enemy, the Gooch . Though Toby offers to return to gambling to help Amy, the Gooch tries to kill them . Happy learns of Toby's actions and arrives in time with Cabe and the police to arrest the Gooch and save the two . In the process, Toby rejects Amy's advances as he loves Happy too much to cheat . Though Sly misses meeting his favorite author, Cabe is able to arrange a private meeting for him at the garage . Throughout the episode, Paige and Walter argue about when their first kiss was . At the end, the two are shown to have exchanged beliefs on which one it was . </Td> </Tr> <Tr> <Th> 87 </Th> <Td> 16 </Td> <Td> "Nerd, Wind and Fire" </Td> <Td> Bethany Rooney </Td> <Td> Scott Sullivan </Td> <Td> February 5, 2018 (2018 - 02 - 05) </Td> <Td> 5.55 </Td> </Tr> <Tr> <Td_colspan="7"> <Table> <Tr> <Td> </Td> <Td> This episode's plot summary may be too long or excessively detailed . Please help improve it by removing unnecessary details and making it more concise . (February 2018) (Learn how and when to remove this template message) </Td> </Tr> </Table> On Valentine's Day, Scorpion gets called in by Cabe, now restored to his position at Homeland Security, to rescue a doctor and a pilot whose helicopter crashed into an incomplete building due to powerful gusts from the Santa Ana winds . The doctor was being flown in to treat a critically - injured patient who will soon die if the doctor can't reach him . As Toby struggles to keep the young man alive, Walter uses equipment from the hospital to create a makeshift zipline to reach the helicopter, but faces problems with the rescue itself . With the team's help, Walter is able to rescue the doctor and the pilot and get them safely across the zipline . However, Walter's own life falls into danger, forcing him to jump off the building to survive . At the same time, Toby and Happy await the results of their fertility tests . After hacking into the hospital's computer system . Toby is discovered to have sertoli cell - only syndrome and to fix it requires more money than they have so Scorpion and Ally pool their resources to help . To his crushing disappointment, Ralph is asked by Patty to tutor her crush, something he tries to sabotage until Walter gives Ralph advice based off of his experiences with Paige . While helping to treat Paige's influenza, Florence learns of Walter's dream and assures Paige that she has no romantic interest in Walter . Instead, Sly and Florence appear to develop feelings for each other . Though Walter's attempts to woo Paige fail, she finds the song he tried to write her and is touched . </Td> </Tr> <Tr> <Th> 88 </Th> <Td> 17 </Td> <Td> "Dumbster Fire" </Td> <Td> Sanford Bookstaver </Td> <Td> Aadrita Mukerji </Td> <Td> February 26, 2018 (2018 - 02 - 26) </Td> <Td> 5.06 </Td> </Tr> <Tr> <Td_colspan="7"> Scorpion is called in to verify a potentially major discovery . However, the lab is so deep underground that spending over four hours causes the pressure to damage the team's IQ . Due to a prairie dog mishap and Walter's inability to properly fix it in his altered state, the lab's particle collider threatens to create a black hole and the team lack the smarts to fix it . Guided by Paige and Cabe, they are able to come up with simpler solutions to some of their problems . After Toby collapses due to the pressure, an effort to save his life by creating a makeshift vacuum restore Toby's intelligence and he is able to come up with a solution to the problem . In the aftermath, Toby and Happy finally agree on a doctor for their fertility problems and Sly comes up with a new water filter for his efforts to reduce the amount of plastic used and enlists Florence's help to perfect it . Though the low - IQ Walter resulted in him having a higher EQ, Walter returns completely to normal and rejects Paige's attempts to go on a date with him based on the things he suggested while dumb . Instead, Walter and Florence spend the night in the lab using their complimentary geniuses to solve a problem . </Td> </Tr> <Tr> <Th> 89 </Th> <Td> 18 </Td> <Td> "Dork Day Afternoon" </Td> <Td> Steven A. Adelson </Td> <Td> Paul Grellong </Td> <Td> March 5, 2018 (2018 - 03 - 05) </Td> <Td> TBD </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> U.S. viewers (millions) </Th> </Tr>

When does scorpion season 4 episode 13 air