Two of a Kind (1951) - with Edmond O'Brien, Lizabeth Scott and Terry Moore.1 Plot

Mike Farrell (O’Brien) is induced by con artists Brandy Kirby (Scott) and attorney Vincent Mailer (Knox) to purloin a rich couple’s ten million dollar estate by having Farrell pose as their long-lost son. When the old man refuses to change his will, Mailer decides to kill the couple, and Kirby plays along.[clarification needed] Farrell refuses to assist and Mailer plans to kill him too. After a botched attempt, with Kirby’s help, Farrell exposes the scam to the old man, dooming Mailer’s plan, and allowing Kirby and Farrell to unite, as “Two of a Kind“.