The fourteenth episode of The CW's "The Flash", titled "Fallout", is written by Keto Shimizu, Ben Sokolowski and directed by Steve Surjik, airing February 17, 2015:
"...after the nuclear explosion separates 'Ronnie' (Robbie Amell) and 'Dr. Stein' (Victor Garber), 'Barry' (Grant Gustin) and the team believe both men are safe. 'Caitlin' (Danielle Panabaker) is thrilled to have her fiancé back and prepares to resume their life together while Dr. Stein returns to his wife.
"However, when 'General Eiling' (Clancy Brown) targets 'Firestorm', Ronnie and Dr. Stein must decide if they are safer together or apart.
"Meanwhile, 'Mason Bridge' (Roger Hayworth) tells 'Iris' (Candice Patton) that there is something secretive going on at 'S.T.A.R. Labs' and Dr. Stein gives Barry some important information about time travel..."
Click the images to enlarge...