The Flash: Tricksters

A number of bombs are set off in Central City, and all evidence points toward a copycat killer. In the hope of tracking down the culprit, Barry and Joe visit the original criminal mastermind, a man known as the Trickster who is serving a life sentence in prison. However, while he agrees to help, it soon becomes clear he has his own agenda. Meanwhile, flashbacks reveal how Wells came up with the idea for the particle accelerator. With a guest appearance by Star Wars actor Mark Hamill