Watch The Flash Online: Season 4 Episode 21
Paul Dailly at .Did the team manage to end DeVoe's reign of terror for good?
That was the plan on The Flash Season 4 Episode 21 as the villain's device neared completion.
Meanwhile, Amunet joined in on the fight against DeVoe, and it gave Caitlin the courage to confront her fears about losing her metahuman persona.
Meanwhile, Harry continued to spiral out of control after it emerged that he was losing his memory.
Use the video above to watch The Flash online right here via TV Fanatic.
Get caught up with all the latest developments as the characters try to win the war.
Paul Dailly was an Associate Editor for TV Fanatic.Follow him on X.