The Flash [Barry Allen]; unnamed firefighters; unnamed police officers; unnamed witnesses; Kristen Kramer; Detective Burns; Detective Morrow; James Forrest; Director David Singh; Kim Kramer (Kristen's sister, in photo); Bloodwork [Ramsey Rosso] (first appearance as Bloodwork); unnamed children (flashback); unnamed EMTs (flashback)
Synopsis
The side effects of the negative speed force causes Barry to lash out at Singh and his co-workers in the crime lab. Kristen tried to reach out to Barry. Barry discovers who is behind the stolen blood samples from the CCPD crime lab, and when the Flash confronts the thief, he finds himself up against a new villain named Bloodwork.