Trent's Last Case is a 1952 British detective film directed by Herbert Wilcox and starring Michael Wilding, Margaret Lockwood, Orson Welles and John McCallum.

It was based on the 1913 novel Trent's Last Case by E. C. Bentley, and had been filmed previously in the UK with Clive Brook in 1920, and in a 1929 US version.

[3][4] A major international financier, Sigsbee Manderson, is found shot dead in the grounds of his Hampshire country estate.

The Record newspaper sends its leading investigative reporter, Phillip Trent, to cover the story.

Trent manages to get past the police cordon and speak to Inspector Murch, the detective leading the investigation.

At the inquest, John Marlowe gives evidence that Manderson gave him instructions to go to Dover to meet a man named George Harrison.

Mrs Manderson changes her mind and asks her uncle, Burton Cupples, to persuade Trent to stop investigating.

Knowing he would be the obvious suspect, Marlowe decided to give himself an alibi, by creating the impression that Manderson did not die till much later.

The pair had had an altercation in the hotel earlier that day, and Cupples feared he would be accused of killing Manderson deliberately because of it.

Margaret Lockwood had just signed a contract with Herbert Wilcox who was better known for making films with his wife, Anna Neagle.

"[10] In one scene, Eileen Joyce is shown playing part of Mozart's C minor Concerto, K. 491 at the Royal Opera House with an orchestra under Anthony Collins.

Leonard Maltin rated the film 2.5 out of 4 stars and noted "superior cast in lukewarm tale of the investigation of businessman's death" while Jay Carr on the TCM website, wrote, "In Trent's Last Case, Welles shares the spotlight with his spectacular putty nose.

It's a mighty ice-breaker of a nose, straight-edged as a steel blade, pulverizing all in its path, including whatever pretension to credibility this creaky British murder mystery might have retained.