The mission of Barry Allen, aka The Flash, is once more to protect Central City from metahuman threats. But with Barry trapped in the Speed Force, this mission falls to his family – Detective Joe West; fiancée Iris West; and Wally West/Kid Flash – and the team at S.T.A.R. Labs: Caitlin Snow/Killer Frost, Cisco Ramon/Vibe and brilliant scientist Harrison Wells. When a powerful villain threatens to level the city unless The Flash appears, Cisco risks everything to free Barry. But this is only the first move in a deadly game with Clifford DeVoe, aka The Thinker, a mastermind who’s always ten steps ahead of Barry, no matter how fast Barry runs.
23 Episodes
  • The Flash Reborn
    The Flash RebornEpisode 1
  • Mixed Signals
    Mixed SignalsEpisode 2
  • Luck Be a Lady
    Luck Be a LadyEpisode 3
  • Elongated Journey Into Night
    Elongated Journey Into NightEpisode 4
  • Girls Night Out
    Girls Night OutEpisode 5
  • When Harry Met Harry...
    When Harry Met Harry...Episode 6
  • Therefore I Am
    Therefore I AmEpisode 7
  • Crisis on Earth-X (III)
    Crisis on Earth-X (III)Episode 8
  • Don't Run
    Don't RunEpisode 9
  • The Trial of The Flash
    The Trial of The FlashEpisode 10
  • The Elongated Knight Rises
    The Elongated Knight RisesEpisode 11
  • Honey, I Shrunk Team Flash
    Honey, I Shrunk Team FlashEpisode 12
  • True Colors
    True ColorsEpisode 13
  • Subject 9
    Subject 9Episode 14
  • Enter Flashtime
    Enter FlashtimeEpisode 15
  • Run, Iris, Run
    Run, Iris, RunEpisode 16
  • Null and Annoyed
    Null and AnnoyedEpisode 17
  • Lose Yourself
    Lose YourselfEpisode 18
  • Fury Rogue
    Fury RogueEpisode 19
  • Therefore She Is
    Therefore She IsEpisode 20
  • Harry and the Harrisons
    Harry and the HarrisonsEpisode 21
  • Think Fast
    Think FastEpisode 22
  • We Are The Flash
    We Are The FlashEpisode 23
Cast of Season 4
  • Grant GustinBarry Allen / The Flash
  • Candice PattonIris West-Allen
  • Danielle PanabakerDr. Caitlin Snow / Killer Frost
  • Carlos ValdesCisco Ramon / Vibe
  • Tom CavanaghHarrison 'Harry' Wells
  • Jesse L. MartinJoe West
Watch Season 4 Videos
  • The Flash: Season 4

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