Acclaimed producer Ross Hunter teams with Lana Turner, Anthony Quinn, Sandra Dee and John Saxon in Portrait in Black, a glamorous and provocative murder mystery set in San Francisco's affluent Nob Hill. An adulterous couple (Turner and Quinn) conspire to kill her tyrannical husband. Soon after the murder, the lovers in crime receive an anonymous letter that says only: "Dear Mrs. Cabot: Congratulations on the success of your murder." With this alarming complication, their new life together begins unraveling as they become trapped in the realization that someone somewhere knows their dark secret.