Complete story — includes the ending
Oliver refuses Nyssa's offer; instead, he manages to convince Malcolm to relinquish control of the League to Nyssa in exchange for the Lotus. At the exchange, Malcolm double-crosses Nyssa and a war starts between the two assassin factions in Star City. Oliver convinces Malcolm to challenge Nyssa to a duel. Oliver uses ancient rules to trade places with Nyssa as her husband. Oliver defeats Malcolm but, instead of killing him, severs the hand wearing the Demon's Head ring and exchanges the ring for the Lotus. Nyssa disbands the League and destroys the ring. Malcolm informs Darhk about Oliver's son, William. Meanwhile, Noah reveals to Felicity that he is the Calculator, claiming to have changed into a good person. She finds out that he is lying and turns him over to the police. In flashbacks, Taiana takes the stone from Oliver and gives it to Reiter, demanding her freedom, which Reiter refuses to do and tasks her to help Oliver recover. She later reconciles with him. Reiter informs Oliver that the stone led to the location of what he seeks; and they are going to "dig".
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, Arrow season 4. HTML formatting and reference markers removed. · Content license