Griffin Grey, a meta-human with super strength, mistakes Harry for Earth-1 Harrison Wells, kidnaps him and demands that Wells cure him from his current condition. Realizing another brilliant Wells could help track Griffin's location, Barry asks Jesse to help. Meanwhile, Wally corners Joe about The Flash.
Cast: Grant Gustin, Candice Patton, Danielle Panabaker, Carlos Valdes, Keiynan Lonsdale, Tom Cavanagh, Jesse L. Martin, Violett Beane, Haig Sutherland