Barry and the team meet Tracy Brand, a scientist, who may be the key to stopping Savitar. Unfortunately, Killer Frost is also after Tracy so Team Flash must battle their old friend, which proves to be particularly difficult for Cisco. Joe and Cecile’s relationship takes a big turn.
Elenco: Grant Gustin , Candice Patton , Danielle Panabaker , Jesse L. Martin , Carlos Valdes , Tom Cavanagh , Danielle Nicolet , Kayla Compton , Brandon McKnight , Hartley Sawyer , Rick Cosnett , Tom Felton , Keiynan Lonsdale , Jessica Parker Kennedy , Jon Cor .