 Some European publicity materials for the film , including posters and lobby card sets , advertised the film as Tenebre , and the 1999 Anchor Bay DVD release uses that same title . However , on the print itself , during the opening credits , the title is clearly Tenebrae . In addition , the title of Neal 's latest book in the film is shown in closeup as being Tenebrae . In a lengthy interview with Argento conducted by Martin Coxhead that appeared in two issues of Fangoria in 1983 and 1984 , the title was always referred to as " Tenebrae " . Early on in production , the film as referred to as Under the Eyes of the Assassin , which was later used as one of the poster taglines . In Japan , the film was released as Shadows , and in the United States it was released as Unsane in its initial – heavily edited – incarnation . 
