Oliver faces the forced release of criminals prosecuted by Adrian Chase, while a crate is delivered to Oliver’s office containing a corpse in concrete.

Black Siren returns to give Chase help; Felicity plans a birthday party for Oliver; Lance is angry with Rene for missing the custody hearing about his daughter.

Oliver assembles a group of unlikely allies – Slade, Nyssa, Merlyn and Digger Harkness – to engage in an epic battle against Chase and his army.

Prometheus goes to extreme lengths to destroy Oliver. In flashbacks, Oliver’s violent tendencies come to a head in a confrontation with Anatoly.

When the bodies of two criminals are dropped at SCPD, Oliver realizes there is a new Vigilante in Star City. The team is split about whether they should stop someone…

Prometheus claims two more victims, and Oliver realizes that the killings are related to the people on his father’s list. His recruits aren’t happy to hear that Oliver used to…

Chuck and Morgan go on a rogue globe-spanning mission to find Chuck’s mom. Meanwhile, Sarah and Casey follow a trail to Russia as they investigate the mysterious Volkoff Industries and…

The chefs must identify mystery proteins as quickly as possible; a dinner service attended by actor Dolph Lundgren and singer Paula Abdul.

The Gang finds themselves in the middle of a focus group after a screening of Thunder Gun 4: Maximum Cool. They are determined to restore glory and traditional American values…

Peter makes good on another power outage at home–by entertaining his family with a retelling of Star Wars Episode V: The Empire Strikes Back. Newcomers to the story include Mort…