R | | Horror, Mystery, Thriller
A young man tries to help a teenage European girl who escaped from a clinic hospital after witnessing the murder of her parents by a serial killer and they try to find the killer before the killer finds them.
Dario Argento's usual collaborating rock band Goblin were originally suggested to write and perform the music score for the film, but were declined by the American producers who wanted something more friendly to the American audience, therefore Pino Donaggio's orchestral score was used.
Severed heads cannot talk. One needs lungs in order to talk.
A special uncut version reportedly available on video features 7 minutes of footage omitted from foreign prints including: