Matthew crosses a dangerous line when he returns to Oxford. Diana discovers his dark past, before something unexpected tears them apart.

Diana gets a chilly welcome when she seeks safety at the Clairmont family home. Back in Oxford, trouble is brewing.

Diana and Matthew’s relationship moves forward. But something’s about to happen that will cast them both further into danger.

After following Dr. Valack’s advice, Scott and the others begin to experience strange things.

After the shocking revelation that Zoom is Jay Garrick, Barry is more determined than ever to get back to Earth-2 to stop Zoom forever. Desperate to find a way to…