What is the name of the husband in Hitchcock's 'Dial M for Murder'?

The husband in Alfred Hitchcock’s *Dial M for Murder* is Tony Wendice.

Tony is a former professional tennis player whose wealthy wife, Margot, has begun an affair with crime novelist Mark Halliday. Fearing divorce and the loss of Margot’s money, Tony devises an elaborate murder plot rather than confronting the affair openly.

Tony blackmails Charles Swann, an old acquaintance, into attacking Margot in their London flat. The plan goes wrong when Margot fatally stabs Swann with scissors. Tony then attempts to frame her for murder, but Mark notices inconsistencies in the evidence and helps uncover the scheme.

A common mix-up is confusing Tony with Mark Halliday, the lover, or with Charles Swann, the hired attacker. The title refers to Tony’s telephone-based murder plan: he arranges for Margot to answer a call at a precise moment so Swann can enter the apartment.