A Birmingham-based band are ordered by their unhappy record company to an old warehouse; the goal being to re-start their ailing careers with a kick-ass new promo video. Unfortunately the band and their entourage find themselves targets of a mysterious knife-wielding maniac, haunted by the voice of Satan, and out for revenge.

In 1912, the notorious and violent prisoner Robert Franklin Stroud is transferred to the Leavenworth Prison convicted for murdering a man. When a guard cancels the visit of his mother, Elizabeth Stroud, due to a violation of the internal rules, he stabs and kills the guard and goes to trial three times. He is sentenced to be executed by the gallows, but his mother appeals to President Woodrow Wilson who commutes his sentence to life imprisonment. However, the warden, Harvey Shoemaker, decides to keep Stroud in solitary for the rest of his life. One day, Stroud finds a sparrow that has fallen from the nest in the yard and he raises the bird until it is strong enough to fly. Stroud finds a motivation for his life raising and caring for birds and becomes an expert in birds. He marries Stella Johnson and together they run a business, providing medicine developed by Stroud. But a few years after, Stroud is transferred to Alcatraz and has to leave his birds behind.

With Argento's trademark visual style, linked with one of his more coherent plots, Tenebrae follows a writer who arrives to Rome only to find somebody is using his novels as the inspiration (and, occasionally, the means) of committing murder. As the death toll mounts the police are ever baffled, and the writer becomes more closely linked to the case than is comfortable.

Samantha Sherwood has worked with the well-known director Jonathan Stryker on all his major films. She naturally assumes she has been given the title role in his latest venture, "Audra". He tells her that she nn needs to do some background research on the part, so arranges to have her committed to an asylum (as Audra is a former psychiatric patient). She goes along with this, not realising that he intends to leave her there indefinitely and audition six young women of various professions for the part instead. She finally manages to escape, and returns to the spooky old mansion where the auditions are taking place. But who is causing the disappearances of the young hopefuls?? Is it Samantha? Stryker? Or is one of the actresses willing to kill for the coveted part?? Just who is the killer behind the old-hag mask???