Complete story — includes the ending
Roy goes on a rampage, overwhelmed by the Mirakuru and no longer thinking clearly. During a fight, Oliver's leg is significantly injured and Roy escapes. Sara decides that Roy must be killed, but Oliver disagrees. Roy comes to Verdant and Oliver uses the opportunity to inject Roy with pit viper venom, knocking him unconscious and keeping him sedated until the cure can be found. Sara feels that she is not good enough for Oliver and leaves the city to find a friend of hers. Meanwhile, Thea continues to distance herself from her family, so Moira opts to drop out of the mayoral race. When Oliver dissuades her, she reveals that she has known Oliver was the Arrow since last year's earthquake and is proud of the man he has become. Moira, Thea, and Oliver are attacked by Slade, who tells Oliver to choose between his mother and sister like he did with Sara and Shado. When Oliver refuses, Moira sacrifices herself and is murdered by Slade. In a flashback to seven years prior, Oliver has gotten a young woman, Samantha Clayton, pregnant, so Moira pays Samantha to tell Oliver that she had a miscarriage and leave Starling City.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, Arrow season 2. HTML formatting and reference markers removed. · Content license