 Nick Slick is a private eye obsessed with him secretary, Mona. After of Mrs. Norton confuses the Slick s office with the sexual clinic of the next door, Nick receive the work of spy to Mr. Norton, because she suspects that her husband is unfaithful. While Slick does his work, discovers that the Mr. Norton is a voyeur, at the same time that Mona discovers the other face of the Mrs. Norton...