Former tennis pro Tony Wendice marries the wealthy Margot for her money, but she has recently begun an affair with a young crime-fiction writer.
Fearing divorce and being left penniless, Tony gets in touch with Captain Lesgate and hires him to murder Margot for a large sum of money.
In the 1950s, Warner produced several films in 3D including the House of Wax and Dial M for Murder.
The process consisted of filming one shot with two synchronous cameras, one for the right eye and one for the left, and the superimposed images were then projected onto a single screen.
But the spectator had to wear Polaroid glasses to see the 3D effect. When Dial M for Murder was released, the process had already fallen out of fashion and the film was not screened in 3D, to the detriment of several sequences: the scene where Grace Kelly uses scissors to fight off her attacker; the close-ups of the key and telephone dials, and the low-angle shots of characters taken with a camera from a pit below the set.
Dial M for Murder marked the start of Grace Kelly and Alfred Hitchcock’s working relationship and she followed on the same year with Rear Window and then To Catch a Thief in 1955.
She was to remain one of the director’s favourite actresses and to become known as the quintessential blond.