Poltergeist: The Legacy (1996)

S1E16 The Dark Priest

An amulet goes missing from the Legacy house, a relic once owned by a cult leader and alleged sorcerer who was slain by Nick's father, a fellow member of the Legacy. The thieves, two brothers, are the sons of Levon Zoltar, the cult leader, and they possess knowledge of how to unleash the amulet's mystical powers. However, these ancient magics demand a human sacrifice to activate their full potential!