“My Husband’s Worst Mistake” (*1/2 out of four) was an inane suspense thriller about a megalomaniacal husband (Scott Gibson) who learns that his wife (Jinesea Bianca Lewis) had an affair and kills her in a fit of rage; he then sets out to destroy the life of the wife (Sarah Cleveland) of the man (Matt Wells) who had an affair with his own wife but soon find that everyone is trying to cover their tracks. Circumstances (read screenwriter’s contrivance) get more and more outlandish and ridiculous by the minute, especially in final third. Glossy lighting and cinematography from Bill St. John can’t save this one from being a huge “mistake” all around.