The Flash Episode 13 Sneak Preview: "The Nuclear Man"

Wouldn't you know it, just as Dr. Caitlin Snow (Danielle Panabaker) is about to move on with her life her ex-fiancé is set to return in next week's "The Nuclear Man" episode.

Next Tuesday, Ronnie (RobbieAmell),aka Firestorm, attacks a physicist (Bill Dow). This forces Barry and his STAR Lab buddies to track down Ronnie, who has become far too dangerous. We'll also see Barry and  Linda Park's (MaleseJow) new relationship put to the test as Barry tries to balance a social life with his superhero responsibilities.

Check out a preview of "The Nuclear Man" below.

"The Nuclear Man" airs February 10th on the CW at 8:00-9:00 p.m. EST.