What's Past Is Prologue

Barry and Team Flash come up with a plan to stop Cicada. However, the plan calls for Barry and Nora to travel back in time to gather some key necessities. However, Barry hesitates, concerned about his daughter seeing certain parts of his life. Meanwhile, Sherloque takes his concerns about Nora to Iris, and Caitlin turns up a key asset in the fight against Cicada.

Guest Stars

Tony ToddZoom (voice)

LaMonica GarrettMar Novu / The Monitor

John Wesley ShippHenry Allen

Benita HaParamedic #1

Troy RudolphParamedic #2

Chad RookClyde Mardon

Islie HirvonenGrace Gibbons

Lossen ChambersDr. Vanessa Ambres

Chris KleinOrlin Dwyer / Cicada

Michelle HarrisonNora Allen

Morena BaccarinGideon (voice) (uncredited)

Teddy SearsHunter Zolomon / Zoom