Ancient Images by Ramsey Campbell

The novel follows film editor Sandy Allan as she embarks on a quest to recover a lost horror film featuring Boris Karloff and Bela Lugosi, which is rumored to have been suppressed due to its disturbing content. As Sandy delves deeper into the mystery, she encounters a series of unsettling events and eerie occurrences that blur the lines between reality and nightmare. The journey takes her through a chilling exploration of the dark side of human nature and the power of hidden, ancient forces, ultimately leading to a confrontation with the sinister truths lurking behind the film's disappearance.