Dominic Bogart

Following the devastating explosion on Lian Yu, Oliver returns home to start a new chapter in his life and confronts a challenge unlike any he's ever faced.

Oliver looks to a surprising source for help as he struggles to connect with William. Onyx breaks into Kord Industries with a rogue black ops team, they manage to get a hold of a lethal item.

Mark interrogates Hellinger to determine when the next blackout will occur; Demetri must decide whether to turn Simon over to the FBI or accompany him in his attempt to prevent the upcoming flashforward.

Mark seeks to safeguard Gabriel, the link between Dyson Frost and the blackout; Aaron risks his life to save Tracy; Janis must assassinate a fellow agent; Simon meets the guy whose organisation may have been behind the blackout.