3. Corto Maltese

Complete story — includes the ending

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, who has broken into the A.R.G.U.S. database and stolen information to sell on the black market. Oliver and Diggle manage to stop Shaw, 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 home, which Merlyn allows. Meanwhile, trying to emulate Sara, Laurel attempts to exact vengeance on the abusive boyfriend of a fellow AA member, but she is overpowered and ends up in the hospital. Later, she asks boxer Ted Grant to train her to fight after Oliver's refusal. With Felicity's help, Ray manages to open a file detailing 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 anguish, as well as master control over physical pain.