Episode Overview
Barry meets Black Lightning at the Hall of Justice after things take a dire turn with Despero. Iris suspects something is off with Despero's vision of the future so she seeks help from a powerful ally.
Guest Stars
Cress Williams
Jefferson Pierce / Black Lightning
Osric Chau
Ryan Choi
Kalvin Olafson
Security Chief
Lisa Chandler
Hazmat Woman
Javicia Leslie
Ryan Wilder / Batwoman
Andres Soto
Marcus (uncredited)
Chyler Leigh
Alex Danvers / Sentinel
Tony Curran
Despero
Ashley Rickards
Rosalind Dillon / Top
Christian Magby
Deon Owens
Tom Cavanagh
Eobard Thawne / Reverse-Flash