A new cast has been announced for The Mousetrap, Agatha Christie’s iconic thriller and the world’s longest running play, with performances beginning in the West End this spring.
Producer Brian Fenty has confirmed that the new company will begin performances at St Martin’s Theatre on Monday 11 May 2026.
The cast includes Saranna Parlone as Mollie Ralston and Ben Riddle as Giles Ralston.
They are joined by Stefan Chanyaem as Christopher Wren, Joanne Henry as Mrs Boyle, James Staddon as Major Metcalf and Anna Rawlings as Miss Casewell.
Dugald Bruce-Lockhart takes on the role of Mr Paravicini, with Ben Galvin as Detective Sergeant Trotter.
Completing the cast are Nancy Doubledee, Bella Farr, Barnaby Jago, Richard Parnwell and Clive Marlowe.
Last year, The Mousetrap celebrated its 30,000th performance in the West End and received a Guinness World Records certificate for the longest theatrical run.
The genre-defining murder mystery first opened in 1952 and continues to play at London’s St Martin’s Theatre more than 73 years on.
Set in Monkswell Manor, the story follows a group of strangers snowed in at a remote guesthouse as a police investigation reveals a murderer is among them.
The Mousetrap is produced by Brian Fenty and directed by Denise Silvey, and is currently booking through to January 2027.
Listings and ticket information can be found here.







