Complete story — includes the ending
Oliver decides to teach Helena that there is justice outside of revenge after witnessing her try to kill the head of the Triad. Diggle expresses his disapproval, but to no avail. She dresses as a purple vigilante and the duo has another man from the list arrested. Helena starts to buy into the idea, but leaves him after finding out that Laurel is his former girlfriend, as she believes they are still together. Helena goes after the Triad, killing their leader. As a result, Chien and her men go after Frank, believing him to be responsible, but Oliver gets there in time to stop them. Oliver also stops Helena from murdering Frank, who is arrested instead; she threatens to reveal Oliver's identity if he tries to come after her in the future. Meanwhile, Tommy finally tells Oliver about Malcolm's actions and asks for a job at the club that Oliver is attempting to build, which he provides. With Felicity's help, Walter learns more about the secret organization of which Moira is a part, finding a notebook containing the list.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, Arrow season 1. HTML formatting and reference markers removed. · Content license