The film follows Tony (Milland) and his discovery of his wife Margot's (Kelly) affair with another man, fiction writer Mark Halliday (Cummings).
Dial M For Murder stars Ray Milland, Grace Kelly, and Robert Cummings. The film follows Tony (Milland) and his discovery of his wife Margot's (Kelly) affair with another man, fiction writer Mark Halliday (Cummings). Tony convinces an old acquaintance, Charles Swann, to enter their house at night while Tony is away to murder Margot. However, things go awry when Margot ends up killing Charles.