15. The Promise

Complete story — includes the ending

Oliver, Moira, and Thea give Slade, who has funded Moira's campaign, a tour of the house. Sara and the rest of the team are notified and arrive to assist Oliver, forcing Slade to leave without engaging. Oliver deduces that Slade is the one controlling the man in the skull mask, all in an attempt to create more Mirakuru. Slade informs Oliver that he is there to follow through with a promise he made to Oliver on the island. Later, it is revealed that Slade used the tour to plant cameras throughout the house. In flashbacks, Oliver, Slade, and Sara are able to board the ship. Sara frees the prisoners while Oliver and Slade go after Ivo, who tells Slade the truth about Shado's death. Slade turns on Oliver and imprisons him on the ship as Sara and the other prisoners escape to the island. Slade takes control of the ship, amputates Ivo's right hand, and tells Oliver that he kept the Mirakuru, having had Sara and Oliver previously destroy an empty box. He promises Oliver that he will not kill him until he has first made him suffer the loss of those he loves.