Screen icons Lana Turner (Madame X) and Anthony Quinn (Across 110th Street) star as an adulterous couple who 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. Directed by Michael Gordon (The Web, Woman in Hiding) with a screenplay by the writing team of Ivan Goff and Ben Roberts (White Heat). The strong supporting cast includes Richard Basehart (The Satan Bug), Sandra Dee (Gidget), John Saxon (The Appaloosa), Ray Walston (Kiss Me, Stupid), Virginia Grey (Target Earth), Anna May Wong (Piccadilly) and Lloyd Nolan (The House on 92nd Street).