Poltergeist: The Legacy - Season 3 - Eps 21: Armies of Night
The Legacy is under siege and their assailants are unknown. Alex has gone for help, Nick has been taken down and away by their attackers leaving only Derek to decipher who's behind their attack. As he remembers past foes who may have come back for revenge Derek searches for Nick and guards his own back from threat. Further into his search the clues to who is trying to bring them down becomes obviously clear when Alex returns not quite herself and Derek comes face to face with the foe he should have known all along.
About Poltergeist: The Legacy

Title: Poltergeist: The Legacy
First Air Date: 1996-04-21
Last Air Date: 1999-11-12
Status: Ended
Rating: 6.1/10 (from 33 votes)
Language: EN
Seasons: 4
Total Episodes: 88
Network: Showtime
Genres: Sci-Fi & Fantasy
Production Companies: Trilogy Entertainment Group
Synopsis
The adventures of the members of a secret society known as the Legacy and their efforts to protect humankind from occult dangers.
Cast

Derek de Lint
Derek Rayne, Ph.D.

Martin Cummins
Nick Boyle

Helen Shaver
Rachel Corrigan, MD

Robbi Chong
Alexandra Moreau

Kristin Lehman