Elizabeth Plumb

While their husbands are away on a hunting trip, two bored housewives get together to commiserate. One thing leads to another, and they wind up in bed. For one of the women the incident was just a pleasant diversion, but for the other it's turned into a fixation, and when she sees her "lover" going after one of the male neighborhood hunks, things take a turn for the worse. (imdb)

A serial killing rapist is on the loose. One of the patients of a psychiatrist, Kenneth Alden (Lawrence Montaigne) named Marco (Frank Cuva) is a suspect of being the killer. Even though (During psychoanalysis) he gives the crimes in detail, there is never enough physical evidence to prove Marco's gulit. I guess this was at a time when taped confessions weren't enough proof! (grindhousedatabase.com)