Complete story — includes the ending
Quentin has Green Arrow look into the death of two police officers and the group learns they were murdered by members of the Anti-Vigilante Task Force. Laurel brings Quentin to see Sara, who is chained up in the basement of Laurel's apartment. Felicity identifies Liza Warner as a suspect and, while searching for her, Oliver discovers Quentin meeting with Darhk. When confronted, Quentin reveals that Darhk threatened to murder Laurel. Darhk advises Quentin to kill Sara, but Laurel dissuades him. Green Arrow and the team stop the corrupt officers just before Liza attempts to kill the vigilante, but Quentin convinces her to surrender. Later, Oliver asks Quentin to spy on Darhk and announces his candidacy, Felicity opens an audio file of Palmer's apparent final moments, and Laurel finds that Sara has escaped. In flashbacks, Oliver gets Taiana, the woman he freed, to a cave and convinces an officer named Conklin of her death, but Conklin discovers Oliver's A.R.G.U.S. communication device.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, Arrow season 4. HTML formatting and reference markers removed. · Content license