Joe and Cisco visit Starling City and ask Captain Lance for help with their investigation into Dr. Wells; Laurel asks Cisco for a favor; Barry faces a new foe who can disguise himself as anyone he touches.
Stars: Grant Gustin, Candice Patton, Danielle Panabaker
Director(s): Wendey Stanzler
Writer(s): Greg Berlanti, Andrew Kreisberg, Geoff Johns