"My Husband's Killer Girlfriend" is a solid Lifetime movie. It has a good story, tight direction and a very likeable cast. The cast goes a long way in making a movie like this enjoyable. The entire cast does a nice job, especially Cindy Busby. Busby really delivers the goods in this movie. "My Husband's Killer Girlfriend" is a satisfying watch. Honorable mention: a dreamy Chelsey Reist. .