The CW releases the promotional photos of episode 23 of season 1 of The Flash, which is the finale of the first season.
EPIC SEASON FINALE; VICTOR GARBER AND ROBBIE AMELL GUEST STAR — Wells (Tom Cavanagh) presents Barry (Grant Gustin) with a life-changing choice. Dr. Martin Stein (guest star Victor Garber) and Ronnie Raymond (guest star Robbie Amell) return to help the S.T.A.R. Labs team with this final fight. Dermott Downs directed the episode with story by Greg Berlanti & Andrew Kreisberg and teleplay by Gabrielle Stanton & Andrew Kreisberg (#123). Original airdate 5/19/2015.