Barry leads a team to discover the shocking source of the anti-matter wave, as John Constantine leads Mia and Diggle into Purgatory. Kara contemplates a dangerous way to bring back her loved ones, and Iris is sent to recruit the final Paragon — a young scientist living on Earth-1.

U.S. air dates are in MM.DD.YY form. U.K. air dates are in DD.MM.YY form.

SciFi Stream earns a commission on purchases made through our affiliate links.

About

BLACK LIGHTNING JOINS THE ARROWVERSE IN THE THIRD CHAPTER OF THE CROSSOVER

Pariah (Tom Cavanagh) enlists Black Lightning (guest star Cress Williams) to help stop the Anti-Monitor (guest star LaMonica Garrett) after Flash-90 (guest star John Wesley Shipp) shares what he learned from his battle in 'Elseworlds.' With the help of Black Lightning, Barry (Grant Gustin), Cisco (Carlos Valdes) and Killer Frost (Danielle Panabaker) come up with a plan that could save them all. Meanwhile, Iris (Candice Patton) has a heart-to-heart with Ryan Choi (guest star Osric Chau), while Oliver (guest star Stephen Amell) and Diggle (guest star David Ramsey) return to an old familiar stomping ground.

David McWhirter directed the episode with story by Eric Wallace and teleplay by Lauren Certo & Sterling Gates (#609).