THE FLASH SEASON 4 Episode 18 (S04E18) - Lose Yourself
When Barry and Team FLASH find a way to enter THE Thinker’s lair, Ralph considers crossing a dangerous line to defeat DeVoe. Meanwhile, Joe is concerned by Harry’s recent behavior. THE FLASH SEASON Number: 4 Episode Number: 18 Episode Title: Lose Yourself Air Date: 2018-04-17