A bloody tale of two very different conjoined twins who are separated as adults. A classic of horror: a creepy, painful, and tense film created using many Hitchcockian techniques.
The already thick atmosphere becomes almost schizophrenic towards the end: the film transforms into a whimsical blend of David Cronenberg's pathological fantasies, Hitchcockian suspense, and bloody giallo of Dario Argento.