Bold and sultry Françoise gets hired by a magazine to lead investigations in the mysterious world of sex. Until she gets caught in the web of sadistic Dr. Vilard, who runs a very strange mental institution.

Paris interdit follows the pattern of the Italian mondo style documentaries which began in 1962 with MONDO CANE. The film jumps from one strange scenario to the next, including a woman who goes publicly nude on a bet, a family man wearing an anti-radiation suit in fear of the end of the world, a orgy-indulging cult with a kissing fetish, a role-reversal wedding of performing transvestites, a middle-aged man who gives striptease lessons to housewives, a self-absorbed loner who believes he’s a vampire, a ritualistic funeral procession involving the burning of a mannequin, a mass swimming pool baptism, etc. Probably the most fascinatingly grotesque bit, which at the same time is strangely touching, is when a woman has her beloved deceased medium sized dog stuffed by a pipe-smoking taxidermist (shown in graphic detail) and installed with an electronic barking device!

Pierre is a free-lance glamour photographer who always has to hassle his penny-pinching employer just to get paid while his bored spouse Françoise stays home all day, trying to keep up a semblance of housekeeping. A former model who has apparently done well for herself, Sylvie, makes a pass at Pierre and invites him to her house in the country for the weekend. Claiming an assignment to his unsuspecting spouse, he decides to take her up on it, only to learn that she too is married to the very open-minded Michel who even brings them breakfast in bed after a night of unbridled passion . As a lark, perhaps deciding that turnabout is fair play, Michel travels to Paris to console the lonely housewife, luring her into a threesome with a casual pick-up.

The film tells the story of Françoise Frémont, who travels across Europe on an apparently random killing spree, bumping off a series of increasingly odious men. From Swinging London to the eternal city of Rome, she leave a trail of dead bodies and the question: why? A mystery film as only Jean Louis van Belle could make it, The Lady Kills is a blast from start to finish with an amazing soundtrack of gloriously groovy psych-rock.