Vivian Stapleton

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...

An elderly gangster just released from prison plans one last job, and gathers a small crew to do the job, but the plan goes sour when one of the crew betrays the details of the operation to a rival gangster.

The film, set almost entirely in New York, tells of the life of some young people of the late Sixties: of the use they make of various drugs, including the terrible LSD, of their sex life and their freedom of costume and thought.