It's Prom night in Chance Harbor and after Adam uncloaks a crystal hidden in the school, Blackwell (recurring guest star JOE LANDO) tells Cassie she can use her dark magic to find it. When Cassie follows this advice, it leads her to a dangerous discovery. Meanwhile, Faye invites Jake to Prom, despite the fact that he stood her up two years earlier. Adam, Diana, Cassie and Melissa finally make it to Prom, but when they lose the crystal to Eben (recurring guest star SAMMI ROTIBI) they end up in a life and death situation. Meanwhile, Dawn attempts to stop Blackwell, who casts a deadly spell on Charles.