Check out the promo and press release for the next episode of The Flash, that returns with new episodes on May 4th.

CAITLIN FIGHTS TO CLEAR FROST – With Frost (Danielle Panabaker) facing an unjust punishment for her past crimes, Caitlin goes to great lengths to save her sister. Meanwhile, Barry’s (Grant Gustin) efforts to protect Speed Force Nora (guest star Michelle Harrison) lead to a shocking discovery.