Ward’s campaign for revenge brings the S.H.I.E.L.D. team to their knees, and Coulson proves he will do anything to settle the score.

Vandal Savage arrives in Central City and sets his sights on Kendra Saunders. After Vandal attacks Kendra and Cisco, they turn to Barry for help. Realizing how dangerous Vandal is, Barry takes Kendra to Star City and asks Oliver and team to hide her until he can figure out how to stop Vandal. However, things quickly go from bad to worse when a man with wings AKA Hawkman shows up and flies off with Kendra. Meanwhile, Harrison develops a serum to make Barry run faster and asks Jay to test it out.

This cross-over episode concludes on Arrow’s season 4 “Legends of Yesterday” episode.

Alicia and Lucca join forces with Louis Canning to defend a website accused of racial profiling. Meanwhile, Eli and Ruth worry about the nature of Alicia’s relationship with Jason and how it could impact Peter’s presidential campaign.

The CIA and BND make a play.

When Boyle’s former military buddy is accused of murder and blames it on the loss of control of his prosthetic arm, Boyle asks Brian to help determine if the artificial limb was hacked. Also, Brian’s father demands he stop working for the FBI.

Castle and Beckett investigate the murder of a cruise ship entertainer, only to find themselves trapped at sea with the killer.

Diane is personally conflicted when she is forced to argue a heated case between pro-choice and pro-life advocates in order to retain an important client, represented by attorney Ethan Carver. Also, Alicia and Lucca are desperate for new business and attempt to poach business from Louis Canning.

Carrie needs Allison’s help. Quinn’s plans change.

A discovery has the potential to change the entire game — if Jessica can refuse Kilgrave’s offer.

Just when Jessica has Kilgrave right where she wants him, Hogarth’s involvement complicates the situation. Details of Kilgrave’s past emerge.