Barry & Caitlin Uncover Firestorm's Secret In The Flash Clip

In tonight's "Revenge of the Rogues" episode Barry Allen (Grant Gustin) is going to be a very busy boy. He'll have to deal with Captain Cold (Wentworth Miller) and Heat Wave (Dominic Purcell) for starters. Then he has to train for a Reverse-Flash rematch.

But there is one more thing Barry has to do. He has to help his friend Dr. Caitlin Snow (Danielle Panabaker) unlock the secret of how her fiance Ronald "Ronnie" Raymond (Robbie Amell) transformed into the metahuman known as Firestorm.

Leonard Snart AKA Captain Cold (Wentworth Miller) returns to Central City with a new hotheaded partner in town – Mick Rory AKA Heat Wave (Dominic Purcell). The duo plan to steal a multi-million dollar painting, but Cold has another agenda while in town – to set a trap for The Flash. Snart and Mick kidnap someone close to The Flash and threaten to kill them unless The Flash shows up for a battle of fire and ice. Barry tells Joe (Jesse L. Martin) he isn't sure he should take on Snart again after the casualties that happened the last time they fought. Meanwhile, Barry asks Dr. Wells (Tom Cavanagh), Caitlin (Danielle Panabaker) and Cisco (Carlos Valdes) to help him double his training efforts so he's ready for the Reverse Flash when he returns to Central City. Iris(Candice Patton) deals with the aftermath of Barry's confession, and Cisco makes the CCPD a new shield.

The Flash returns tonight at 8 p.m. ET/PT on The CW