In the 1985 mystery film "Thirteen at Dinner" what role did David Suchet play?

“Thirteen at Dinner” is a 1985 British-American made-for-television mystery film featuring the Belgian detective Hercule Poirot. It was adapted by Rod Browning from the 1933 Agatha Christie novel “Lord Edgware Dies,” and first aired on CBS Television on 18 October 1985.

Lord Edgware is found dead. His staff insist that his wife, Jane Wilkinson, must have killed him, since she had already threatened to do so earlier and she has a strong motive. Inspector Japp of Scotland Yard is ready to arrest Wilkinson, but she has an apparently perfect alibi: she was at a dinner party with twelve other people. After the actress Carlotta Adams is also murdered, Poirot investigates, much to Japp's annoyance. In the end, it is revealed that Jane Wilkinson did murder her husband, hiring Adams – a skilled impersonator – to attend the dinner party in her place in order to provide herself with the alibi. She then killed Adams to ensure her silence.

In this version Hercule Poirot is played by Peter Ustinov, Poirot's associate Hastings is played by Jonathan Cecil, and Lord Edgware is played by John Barron. David Suchet plays the role of Inspector Japp.

There is a slight irony here. David Suchet is perhaps best known for playing Hercule Poirot throughout the television series “Agatha Christie's Poirot” that ran for seventy episodes in thirteen series from 1989 to 2013.