It was released on a DVD from BCI which included audio commentary tracks as well as on a Blu-ray from Shout Factory as part of their Paul Naschy Collection.
[3] The film introduced Naschy's character of Alaric de Marnac, an executed warlock who returns to life centuries later to wreak his revenge.
The film's plot seems to have been inspired by the 1958 American horror classic The Thing That Couldn't Die, with a nod toward Black Sunday (1960) and Night of the Living Dead (1968).
Most of the party is decimated by the time the last remaining member figures out a way to send Alaric and his mistress back to Hell by exposing the monsters to a sacred medallion.
"[7] In another review from DVD Talk, Stuart Galbraith rated it 2/5 stars and recommended it to horror fans "open-minded enough to forgive [Naschy's] films' frequent incoherence and low budgets".