Carol Hammond, the wife of a London lawyer, is having bizarre dreams about her uninhibited neighbour, Julia Durer, who presides over noisy parties in the house next door. One night, she wakes to find her nightmares have become reality – Julia has been murdered and Carol is the main suspect.

Heightened by psychedelic sequences and a hip Ennio Morricone score, this Swinging London-set giallo takes a dark trip into the unconscious. The underside of the hippy dream unravels in Fulci’s notorious thriller, which landed its producers in the Italian courts for accusations of animal cruelty.