Mariale decides to invite some friends over for the weekend and stages a decadent orgiastic party.

[4] Curti described the giallo trademarks of violent murders and a twist ending are marginal when compared to other films of the genre at the time.

[4] Curti opined the film was one like a perverse kammerspiel which borrowed from both gothic and avant-garde theatre.

[1] When the film was released in France, it was titled Exorcisme tragique to try and bank on the popular success of The Exorcist.

[5] In a retrospective review, Curti stated that Scavolini's direction and Fiorenzo Carpi's score "cannot overcome the script's many shortcoming–namely, sketchily developed characters, pretentious dialogue, heavy-handed symbolism.