The Flash: Season Premieres Ranked

Barry and Iris relive the same day over and over again; Joe has a heart-to-heart with Cecile; friends and foes, old and new, begin to descend upon Central City.

When a powerful alien threat arrives on Earth under mysterious circumstances, Barry, Iris and the rest of the team are pushed to their limits in a desperate battle to save the world.

Barry is brought out of the Speed Force to help fight an armored villain, but he isn't the same person.

CSI investigator Barry Allen awakens from a coma, nine months after he was hit by lightning, and discovers he has superhuman speed.

When Barry and Iris deal with the loss of their daughter, the team faces their greatest threat yet - one that threatens to destroy all of Central City; Killer Frost has a brush with death that will change her relationship with Caitlin.

After an unexpected guest from the future appears at their home, Barry and Iris must figure out how to get her back to the future without disrupting the timeline.

The Reverse-Flash taunts The Flash and warns of repercussions if Barry continues to forget his old life. When disaster strikes, Barry must decide whether to live as Barry Allen or return to his universe as The Flash.

Abra Kadabra returns to Central City seeking revenge for an unimaginable wrong. Meanwhile, a mysterious behemoth strikes at the city.

Still feeling responsible for Eddie's death, Barry pushes his friends away and tries to protect the city on his own; Cisco assists Joe with the Meta Task Force.