Murder by Numbers (2002)
'Murder By Numbers' is a psychological suspense-thriller that tells the story
of a tenacious homicide detective, Cassie Mayweather (Sandra Bullock) and
her new partner Sam Kennedy (Ben Chaplin) who become pitted against two
malevolently brilliant young men (Ryan Gosling and Michael Pitt) in an
ingenious battle of wits as they try to solve a murder case.

Dial M for Murder (1954)
Ex-tennis pro Tony Wendice decides to murder his wife for her money and
because she had an affair the year before. He blackmails an old college
associate to strangle her, but when things go wrong he sees a way to turn
events to his advantage.