<Tr> <Td_colspan="8"> With no more leads in Sara's murder, Oliver focuses his attention on bringing Thea home . Felicity is able to track her to Corto Maltese . Thea initially refuses to return . While he waits to convince her, Oliver assists Diggle on a mission for A.R.G.U.S. to ascertain the whereabouts of one of its agents, Mark Shaw . Mark is revealed to have broken into the A.R.G.U.S. database and stolen information to sell on the black market . Oliver and Diggle manage to stop him, who convinces Diggle to tell Waller that he is dead . After a last minute plea, and Oliver revealing the truth about Robert's death, Thea agrees to return, which Merlyn allows . Meanwhile, trying to emulate Sara, Laurel attempts to exact vengeance on an abusive boyfriend of a fellow A.A. member, but she is overpowered and ends up in the hospital . Later, she seeks out boxer Ted Grant to train her to fight after Oliver's refusal . Using Felicity's help, Ray opens a file of details of advanced weaponry . Nyssa confronts Oliver and demands Sara's whereabouts . In flashbacks to six months prior, Merlyn begins training Thea to calm her mind and heal her emotional pain, while also mastering control over physical pain . </Td> </Tr> <Tr> <Th> 50 </Th> <Td> </Td> <Td> "The Magician" </Td> <Td> John Behring </Td> <Td> Marc Guggenheim & Wendy Mericle </Td> <Td> October 29, 2014 (2014 - 10 - 29) </Td> <Td> 3J5154 </Td> <Td> 2.49 </Td> </Tr> <Tr> <Td_colspan="8"> Oliver informs Nyssa that Sara was killed; and Nyssa reveals to Oliver that Merlyn is alive and Sara was sent by the League to confirm his existence . After tracking Merlyn, Oliver agrees to meet him in a public location, where Merlyn tells Oliver that he did not kill her, but only returned to Starling City to save Thea . Nyssa kidnaps Thea in an attempt to draw out Merlyn, known by the League as the "Magician"; but Oliver arrives to rescue Thea . Merlyn arrives shortly after to clear his name and insinuates to Nyssa that it was Ra's who had Sara killed . Nyssa does not believe him; but Oliver does and vows to protect Merlyn for as long as he is in Starling . Nyssa warns Oliver that he has made a serious enemy in the League before leaving and reporting back to Ra's . Quentin gets worried about Sara's status . In flashbacks, Oliver completes his first assassination, and learns that Waller was behind Edward Fyers' actions on the island; and her intention was to kill Chien on a flight to Hong Kong . Since Oliver stopped the attack, Waller demands him to help her find out the reason of Chien's presence . </Td> </Tr> <Tr> <Th> 51 </Th> <Td> 5 </Td> <Td> "The Secret Origin of Felicity Smoak" </Td> <Td> Michael Schultz </Td> <Td> Ben Sokolowski & Brian Ford Sullivan </Td> <Td> November 5, 2014 (2014 - 11 - 05) </Td> <Td> 3J5155 </Td> <Td> 2.73 </Td> </Tr>

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