Brie Larvan breaks out of jail and turns up at Palmer Tech threatening to kill everyone unless she gets the bio-chip that is implanted in Felicity’s spine. When Oliver realizes that Felicity, Thea and Donna are trapped in Palmer Tech with everyone el... (more)se, he looks to a surprising ally to help Team Arrow save the day.

Adrian Glynn McMorran, Charlotte Ross, Echo Kellum, Elysia Rotaru, Emily Kinney, Jimmy Akingbola, Neal McDonough