Deadly Charades (1996) is an example of couples erotica in the form of a crime caper.
Shea Farrell plays a B movie producer who's having trouble getting funding for his latest project. His wife, Leslie Kay, owns an art gallery. Shea would be lost without his assistant, Julie Hughes, and her boyfriend works for Leslie Kay
(General Hospital, As the World Turns, The Bold and the Beautiful, and many more
soaps).
Husband and wife have been using role-playing to spice up their sex, but
Leslie informs hubby that she is tiring of the games, and would like to have sex as themselves for a change. Then he starts getting gifts from Madame X, whom he assumes is his wife. We slowly realize that he is being set up big-time.
The only interesting aspect of the film is nudity from a major soap star, Leslie
Kay. The story is elaborate, but is not told well, and never builds any
suspense. The sex scenes are not especially hot, and the nudity is not very
explicit.