The Flash season 2 episode 22 (S02E22) - Invincible
After Zoom unleashes an army of Earth-2 meta-humans on Central City, Barry is shaken when he Sees their leader is the Black Canary’s Earth-2 doppelganger, the Black Siren. Meanwhile, Wally takes to the streets to help The Flash stop the meta-humans, which worries Joe. Iris and Henry are concerned about...