John Saxon (A NIGHTMARE ON ELM STREET, THE BEES) and Anthony Franciosa (A FACE IN THE CROWD, WEB OF THE SPIDER) star in Dario Argento's mesmerizing masterclass in high-style giallo terror! An American novelist visiting Rome to promote his latest book is stalked and harassed by an obsessed fan who is committing a string of murders that appear to be tributes to his work.