When acclaimed New York crime writer Peter Neal (Anthony Franciosa) flies to Rome to promote his latest novel, Tenebrae, his publicity tour is cut short by a series of murders that come straight out of the pages of his book. Neal, and his staff begin to investigate the killings, but as they come closer to the truth, the bloodshed begins to escalate. In order to solve the mystery, they will need to look to Neal's novel to find out who is the real killer before the killer finds them. Originally included in the infamous video nasties list, Tenebrae is based on director Dario Argento's own experiences with an obsessed fan.