Book of Blood
This is the frame story for the entire "Books of Blood" series by Clive Barker. A psychic researcher, Mary Florescu, has employed a quack medium named Simon McNeal to investigate a haunted house.
Alone in an upstairs room, McNeal at first fakes visions, but then the ghosts really do come for him.
They attack him and carve words in his flesh, and these words, claims the narrator, form the rest of the stories, stories written on a literal, living Book of Blood.
Starring: Sophie Ward, Jonas Armstrong, Paul Blair, Doug Bradley, Simon Bamford, James Watson, James McAnerney, Romana Abercromby.