Mark Halliday — Dial M for Murder Character Profile

About Mark Halliday

American crime-fiction writer and Margot's lover. He visits Tony to suggest a confession that would save Margot, discovers hidden money in an attaché case, confronts Tony, and assists Hubbard in executing the final trap by re-entering the flat.

Character Facts

Played by

Robert Cummings

Appears in

Dial M for Murder (1954)

Role

Supporting

More characters from Dial M for Murder

• Tony Wendice (Ray Milland)
• Margot Wendice (Grace Kelly)
• Chief Inspector Hubbard (John Williams)
• Bobby (uncredited) (Jack Cunningham)
• Charles Swann (Anthony Dawson)
• Judge at Margot's Trial (uncredited) (Forbes Murray)
• Banquet Member (uncredited) (Herschel Graham)
• Storyteller (Leo Britt)
• Man in Phone Booth (uncredited) (Sam Harris)
• Waiter at Stag Dinner (uncredited) (William H. O'Brien)
• Detective (uncredited) (Thayer Roberts)
• Men's Club Party Member (uncredited) (Harold Miller)