Agatha’s Christie’s The Mousetrap, the world’s longest running play, will welcome a new cast to the West End from Monday, May 11, 2026.

The new cast includes Saranna Parlone as Mollie Ralston, Ben Riddle as Giles Ralston, Stefan Chanyaem as Christopher Wren, Joanne Henry as Mrs Boyle, James Staddon as Major Metcalf, Anna Rawlings as Miss Casewell, Dugald Bruce-Lockhart as Mr Paravicini, and Ben Galvin as Detective Sgt. Trotter. Completing the cast are Nancy Doubledee, Bella Farr, Barnaby Jago, Richard Parnwell and Clive Marlowe.
As news spreads of a murder in London, a group of seven strangers find themselves snowed in at Monkswell Manor, a remote countryside guesthouse. When a police sergeant arrives, the guests discover – to their horror – that a killer is in their midst. One by one, the suspicious characters reveal their sordid pasts. Which one is the murderer? Who will be their next victim?
Currently staged at London’s St Martin’s Theatre, the play last year celebrated its 30,000th performance in the West End. It first opened in 1952, and is now booking through to January 2027.
The Mousetrap is produced by Brian Fenty and directed by Denise Silvey. Tickets here.