Season 4    Episode 22
May 15, 2018    42m    TV-14
80%
When DeVoe assaults an A.R.G.U.S. facility to complete his Enlightenment Machine, Barry realizes the only way he can stop him is if he allows Cisco and Caitlin to accompany him into the facility. Still shaken by Ralph’s death, Barry isn’t sure he wants to risk any more of his friends’ lives and considers taking on DeVoe solo.
Directed By
Viet Nguyen

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Cast of Think Fast
  • 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
  • Danielle NicoletCecile Horton
  • Patrick RinehartA.R.G.U.S. Guard
  • Ryan Alexander McDonaldNeil Borman / Fallout
  • Kim Suzanne EngelbrechtMarlize DeVoe / The Mechanic
  • Donna PescowDr. Sharon Finkel
  • Victoria AskounisYoung Caitlin
  • Adil ZaidiA.R.G.U.S. Scientist
  • Nathan BarrettPizza Dude
  • Samantha HumTechnician
  • Neil SandilandsClifford DeVoe / The Thinker
  • David RamseyJohn Diggle / Spartan
  • Morena BaccarinGideon (voice) (uncredited)

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