Despite losing half his team, Oliver remains confident that he, Felicity and Diggle can stop Cayden James and Black Siren. However, when he discovers one of Cayden’s secrets, he decides…

While Skyler’s past catches up with her, Walt covers his tracks. Jesse continues to struggle with his guilt.

Walt takes control of business matters; Mike deals with the consequences of his actions.

Walt, Jesse, and Mike struggle over the future of their business, as occupational hazards weigh on Jesse.

Agent Hotchner revisits the first case he worked at the BAU when details come forth that one of the deadliest serial killers in New England’s history has struck again after…