Crystal

S1 E19: To protect themselves from the witch hunters, Jake, Cassie and Faye seek out Jake's grandfather Royce (guest star JOHN de LANCIE – Breaking Bad) to find his family's crystal and are confronted with disturbing theories about the events of 16 years ago. Meanwhile, Diana tries to balance her pursuit of the Glaser crystal with Melissa and Adam with her romantic life with Grant (recurring guest star TIM PHILLIPPS), who demands to know what she's hiding. At the same time, Callum (recurring guest star MICHAEL GRAZIADEI) attempts to reinsert himself into Melissa's life. Charles and Jane plot their move against Blackwell (recurring guest star JOE LANDO).