Murder in the Mirror (TV)

Newly married psychiatrist Mary (Seymour) is identified as the murderer of her husband, Paul (Desiderio), by an unimpeachable eyewitness. Detective Russo (James Farentino) is all for putting the cuffs on Mary, but she convinces him to wait until more evidence is gathered. Conducting her own personal investigation in some of the seamier districts of town, Mary learns that the likely killer is a woman who looks, acts, and dresses very much like her -- and, more disturbingly, our heroine discovers that her husband was leading a most unsavory double life.