The Flash

CW | 8:00 pm

Ralph (guest star Hartley Sawyer) considers crossing a very dangerous line to take down DeVoe after Barry (Grant Gustin) and his team find a way to get into the lair of The Thinker in "Lose Yourself." Elsewhere, Harry’s (Tom Cavanagh) recent behavior becomes a matter of concern for Joe (Jesse L. Martin). Candice Patton, Danielle Panabaker and Carlos Valdes also star.