The Unholy Wife (1957)

A woman marries a man for his wealth, then concocts a plan to kill him, take his money, and run off with her lover. Things go wrong when they accidentally kill the wrong person.

Directed by: John Farrow

Starring: Diana Dors, Rod Steiger, Tom Tryon, Beulah Bondi, Marie Windsor, Arthur Franz

Links: IMDb, Movie posters, Movie stills