Focusing on a bizarre series of horrific murders, and arguably Argento’s finest film, Tenebrae is also the source of the seminal image that has graced the cover of more horror books than Bela Lugosi: the wide-eyed girl staring in terror through the slit in her ripped T-shirt. And if none of the above mean anything to you, then that’s all the more reason to get on the bandwagon right now.
– Empire