Cristina (Paola Senatore*, Emanuelle in America, Ricco the Mean Machine) is a call girl and for that, every man that has ever partaken of her services must pay, in some sort of role reversal for every other giallo and slasher.
Much like how his leading lady was known for westerns, so was director Demofilo Fidani, who made movies like Coffin Full of Dollars (how's that for a title?), Django and Sartana Are Coming... It's the End, One Damned Day at Dawn...Django Meets Sartana!, His Name Was Pot... But They Called Him Allegria and His Name Was Sam Walbash, But They Call Him Amen. As you can tell, many of his films were titled and treated like either sequels or - let's be fair - ripoffs of better-known characters and movies.
So when everyone else started making giallo, Fidani was sure to follow.
You know how people on Twitter like to use the term problematic? Well, they'd lose their brains all over those, which presents leaving home to enter the sex industry to be a loveable lark, even when your clients get their throats slit the minute they leave her flat. It's also a film that wants its cake - Vitelli is gorgeous and frequently involved in increasingly kinkier situations - and eat it too, as the whole moral of the story is that the world is falling into decay because of all this sex. So let's show some more sex! And violence!
Also known as Caresses à domicile (Caresses at Home), the funny thing is that her life gets better when she leaves her father's house - well, despite the fact that her daddy gave her everything that she ever wanted - to live with a friend, Paola (Simonetta Vitelli, who is the daughter of the director). So there's not really any drama here, other than you know, all the murder.
*Sadly, she became addicted to heroin late in her career. After making two softcore films for Joe D'Amato, she made her one and only hardcore film, Non stop... sempre buio in sala. She was then arrested for drug smuggling, went to prison and disappeared.