New casting has been announced for Agatha Christie’s iconic thriller The Mousetrap, the longest running play in the world, which continues to enthral audiences at London’s St Martin’s Theatre.

From 18 November, the full new cast will include Lara Lemon (Witness for the Prosecution, London County Hall) as Mollie Ralston, Harry Bradley (The Play That Goes Wrong, West End) as Giles Ralston, Richard Leeming (The Haunting, New Vic Theatre) as Christopher Wren, Rekha John-Cheriyan (The Best Exotic Marigold Hotel, National & International tour) as Mrs Boyle, Owen Oakeshott (Land of the Free, Southwark Playhouse) as Major Metcalf, Grace Darling (Queen, Edinburgh Fringe) as Miss Casewell, Alasdair Buchan (Accolade, Theatre Royal Windsor/Tour) as Mr Paravicini, and Daniel Rainford (Laughing Boy, Jermyn Street Theatre) as Detective Sgt. Trotter. Additional members of the company include Liv Koplick, Clive Marlowe, Richard Parnwell, Ben Riddle, and Cathryn Sherman who will understudy various roles.

This cast will play until 10 May 2025.

The Mousetrap is currently booking at the St. Martins Theatre until 27 September 2025, with tickets available here.