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• 2 Soeurs Lubriques Alpha France download title
• Contraintes par Corps Alpha France, video reissue title
• Sextasy USA, fake opening cast credit, Command Video, 1 hr 18 mins

• Cathy Stewart as Cathy Steewart, plays Norma
• Claude Janna plays "Femme 1"
• Diane Dubois plays Murielle
• Morgane plays Alice (as Marianne Flowers in the American release)
• Valérie Martin's as Virginie Caillat, plays 'Mannequin Femme'

Script by Claude Mulot (Frédéric Lansac).

• Natalie (unlisted) plays Mado, Alice's mother (?)

Males -

• Patrice Chéron as Patrice Cheron plays Frederic
• Alban Ceray plays Laurent, Frederic's publisher
• Dominique Aveline plays Tony
• Michel Anderson plays the psychiatrist
• Daniel Bellus plays Christian
• Jean-Louis Vattier plays 'Homme 1'
• Guy Royer plays 'Homme 2'
• Pitof plays Bobby
• John Oury as Mister John plays 'Mannequin Homme'
• Joël Charvier plays Georgy
• Hervé Amalou (André Miller) plays Alex, Alice's former boyfriend

The American version (Command Video) has a credit for Marianne Flowers (MOrgane's alias in American releases) at the start, but the French closing credits are retained.

This is a forgotten porn classic. It has a real and believable story, and one with sex at the centre of the plot, and because it is believable, the sex is more erotic.

Frederic is a writer whose wife Alice is tormented by dreams of her promiscuous, but dead, sister who fell from their apartment, high in a tower block. Then someone falls from a similar apartment block near the dress shop where Alice works and she adopts the promiscuous ways of her dead sister, Norma, including seducing Frederic's publisher and being caught in the act by Frederic. Frederic consults a psychiatrist and investigates her past which results in flashbacks of Norma's behaviour. Alice's new proclivities are exploited by Tony, the unscrupulous lover of the woman who introduced Alice to Frederic. He photographs her in a threesome and tries unsuccessfully to blackmail Frederic. Finally Frederic finds Alice's former boyfriend and it turns out that he had been seduced by Norma and that Alice had caught them at it and pushed her sister off the balcony.