AllMovie

This thriller stars Eileen Brennan as a much-too-clever housekeeper. Brennan is aware that she isn't exactly a fashion plate, and that her chances of attracting the handsome master of the house (George Maharis) are slim to none. She also realizes that the master has murdered his brother, and uses this knowledge to blackmail her boss into matrimony. But there's a twist ending that literally puts the scheming domestic in her proper place.