Paxton Quigley is simultaneously dating three women. They discover his infidelity, lure him into a dormitory attic, and punish him by having continuous sex with him until he is physically destroyed.

THREE IN THE ATTIC (1968) was American International Pictures' highest-grossing film of the decade, which says something about both AIP and the decade.

Much of it was shot at the University of North Carolina in Chapel Hill; AIP told the chancellor the film was a "social satire." A local reporter was denied entry to the set and filed a story claiming they were filming a "skin flick" on campus. Letters poured into the chancellor's office. The director wrote a formal apology.

The screenplay started as a student script called Paxton Quigley's Had the Course, which won a Writers Guild of America award for best student screenplay in 1964. The writer, Stephen Yafa, couldn't sell it. So he turned it into a novel. AIP turned the novel into a film. Yafa then publicly disowned the film.

It was released on a double bill with Woody Allen's What's Up, Tiger Lily?, which is perhaps the most 1968 sentence it is possible to write.

The dean in the film delivers the line "Non-swimmers should never leap bare-assed into the sea of love. My dear, the sea of love is full of squid." This film contains multitudes.

Fun fact: Quentin Tarantino put it on a marquee in Once Upon a Time in Hollywood.