Season 4
23 episodes
42 min. per episode
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A young hero battles time and fate, racing against dark forces to protect his city and uncover hidden truths.
Trailer
Episodes
Barry is brought out of the Speed Force to help fight an armored villain, but he isn't the same person.
Barry deals with the ramifications of abandoning Iris while facing a meta who can control technology.
A new meta called Hazard causes bad luck for Barry and the team; Harry Wells returns to Earth-1.
Gypsy's father, Breacher, takes an immediate disliking to Cisco and decides to hunt him; Barry runs into his old nemesis, Ralph Dibny.
Caitlin fears that her past time as Killer Frost may be back to haunt her; Felicity helps celebrate Iris's bachelorette party, while Barry is taken out for a night on the town.
After being struck by lightning, Barry Allen wakes up from his coma to discover he's been given the power of super speed, becoming the Flash, and fighting crime in Central City.