Complete story — includes the ending
Felicity realizes that the female vigilante has been following Laurel, not Oliver. Oliver manages to ambush her and discovers that she is Sara, Laurel's sister who was believed to have drowned. Weapons shipments keep being intercepted by a gang leader calling himself "The Mayor", who assaults a gun rally hosted by Oliver and Blood. Cindy is shot in the process, but Roy saves her. Felicity manages to identify the Mayor as Xavier Reed and tracks him down. Oliver recruits Sara to assist him in capturing Reed. Afterwards, a corrupt police officer brings Reed to an unknown location, where Blood, called Brother Blood by his associates, injects him with a green substance that kills him. He orders another person be brought for the substance. Meanwhile, Laurel develops a drinking problem and refuses help from Quentin and Oliver. In response, Oliver asks Sara to reveal herself to her family, even though he knows they will stop talking to him for lying. In flashbacks, Oliver is questioned about the Japanese bodies but, when he refuses to answer, he is taken to an interrogation room where he first learns that Sara is alive.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, Arrow season 2. HTML formatting and reference markers removed. · Content license