15. Fighting Fire with Fire

Complete story — includes the ending

Oliver's impeachment process begins, with Chase serving as his attorney. The Vigilante starts targeting the former, but is opposed by Prometheus, who is revealed to be Chase. Using Pandora, Felicity and Thea learn about a secret that can be used to blackmail an alderman. Oliver and John dissuade them from using it. Using a piece of the Vigilante's visor, Curtis manages to track him down to where he plans to assassinate Oliver. To give himself a fighting chance to remain mayor, Oliver publicly disavows the Green Arrow as a "cop killer", stating his motive for the cover-up was to protect the people from losing hope. The Vigilante escapes. The council votes against impeachment, but Thea resigns from Oliver's administration in order to work on her morality. Paul decides to divorce Curtis. Susan gets her job back due to Felicity's anonymous testimony. Felicity then secretly joins Helix. Chase aggressively demands that Susan listen to his story. In flashbacks, Anatoly demands "spross dopross", the process by which the Pakhan may be overthrown. Oliver infiltrates Kovar's mansion and acquires evidence that Gregor has been embezzling the Bratva's money. The majority of the captains vote for Anatoly, but Gregor starts a mutiny.