Complete story — includes the ending
Barry manages to save Oliver's life. Barry and Felicity are able to identify the thief as Cyrus Gold and locate him. While continuing to investigate the death of Cindy's friend Max, Roy is captured by Cyrus and brought before Blood, who injects him with the Mirakuru, killing Roy. Oliver arrives and murders Cyrus, simultaneously destroying the centrifuge and the remaining serum. Oliver revives Roy, but worries that the serum may affect him negatively. Slade is revealed to be alive in the present and the one orchestrating Blood's dealings; he orders Blood to leave the Arrow alone so that he can deal with him personally. While Roy recovers at the Queen mansion, the serum injection heals the arrow wound in his leg. Barry leaves a domino mask so Oliver can better hide his identity and returns to Central City. While in his lab, Barry is hit by strange lightning caused by an accident at the particle accelerator. In flashbacks, Ivo tells Oliver to choose between Sara and Shado. When Oliver steps in front of Sara, Ivo murders Shado, but flees when Slade turns up with super-human strength and kills his men, leaving the Mirakuru behind. This episode, along with "The Scientist", serves as a backdoor pilot to The Flash.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, Arrow season 2. HTML formatting and reference markers removed. · Content license