Season 4 · Episode 21
Harry and the Harrisons (4x21)
May 8, 2018
Episodes · S4
E1The Flash Reborn (4x1)
E2Mixed Signals (4x2)
E3Luck Be a Lady (4x3)
E4Elongated Journey Into Night (4x4)
E5Girls Night Out (4x5)
E6When Harry Met Harry... (4x6)
E7Therefore I Am (4x7)
E8Crisis on Earth-X (III) (4x8)
E9Don't Run (4x9)
E10The Trial of The Flash (4x10)
E11The Elongated Knight Rises (4x11)
E12Honey, I Shrunk Team Flash (4x12)
E13True Colors (4x13)
E14Subject 9 (4x14)
E15Enter Flashtime (4x15)
E16Run, Iris, Run (4x16)
E17Null and Annoyed (4x17)
E18Lose Yourself (4x18)
E19Fury Rogue (4x19)
E20Therefore She Is (4x20)
E21Harry and the Harrisons (4x21)Now playing
E22Think Fast (4x22)
E23We Are The Flash (4x23)