The House of Seven Corpses is a 1974 horror film directed by Paul Harrison, and it is a very ‘meta’ horror, as it is basically a horror-film that takes place within a horror-film.
A film crew are using a house as a location for a horror film that they are making – the house was the scene of seven murders that were committed in the past. The murders were related to supernatural rituals
The director wants things to be as authentic as possible, so he wants the crew to re-enact the rituals as they happened as part of his film.
It all backfires when their actions raise an undead ghoul from the graveyard next door who hunts them down one by one…..
The House of Seven Corpses posters