The reveal of Adrian Chase (Josh Segarra) as a serial killer creates all kinds of new trouble in Star City as dozens of criminals prosecuted by Prometheus are set free. Meanwhile, Oliver‘s (Stephen Amell) attention is drawn to the madman’s latest mind game involving an unearthed corpse delivered to city hall of a man killed by Robert Queen (Jamey Sheridan). Returned to town just in time for the twisted surprise (wow, what a coincidence), Thea‘s (Willa Holland) belief in the father who raised her will be tested as the truth comes to light. Even behind bars Prometheus’ games haven’t stopped. What else does he have up his sleeve?
Among the various other subplots of the episode is Oliver’s return to Lian Yu as things are brought full circle and Arrow prepares to an end to the flashbacks of Oliver’s missing years. His plan to be rescued after a couple of days by a fishing boat may not go exactly as planned, however. The flashbacks also mark the return of Konstantin Kovar (Dolph Lundgren) who has followed Oliver to the end of the world to get his revenge.