A woman is strangled in the bath by a black-gloved killer who disposes of her body in a large trunk. The trunk is delivered to St. Hilda College, an exclusive finishing school. Betty-Anne, one of the female students, is strangled in the school cellar. The police, led by Inspector Durand, are called in to investigate. Suspects include La Floret, the voyeuristic gardener; Di Brazzi, the new swimming instructor; Mrs. Clay, the summer school French mistress; an old professor who collects birds; and a philandering young teacher called Richard. The murders continue but Jill, a keen amateur detective, helps the police identify the unlikely killer...

Two strange street musicians end up in jail and exchange sexy stories to while away time.

Young painter Teddy is successful with women but not very clever about selling pictures. He is in love with Elisabetta but cannot marry her because he is penniless. The couple asks for help from Peppino, a retired clerk who often uses Teddy's painting, pretending that they are his so he can impress the women he likes.