Meet the cast of The Mousetrap

Published on 10 March 2025

Last updated on 15 May 2026

Summary

  • Agatha Christie's The Mousetrap continues its historic run at St. Martin's Theatre, having surpassed 29,000 performances since its 1952 debut.

  • The current cast features talented actors like Saranna Parlone as Mollie Ralston and Ben Riddle as Giles Ralston, and Ben Galvin as Detective Sergeant Trotter, who each bring unique interpretations to their roles.

  • Directed by Philip Franks, the ensemble maintains the play's legacy while captivating audiences with its intricate plot and suspenseful characters.

Agatha Christie's The Mousetrap continues its unparalleled run at London's St. Martin's Theatre, captivating audiences with its intricate plot and rich history. Since its West End debut on November 25, 1952, the play has achieved remarkable milestones, including over 29,000 performances and more than 10 million tickets sold. In 1974, the production seamlessly transferred from the Ambassadors Theatre to St. Martin's Theatre without missing a single performance, showcasing the dedication of its team. To date, The Mousetrap has featured no fewer than 297 actors and actresses. Notably, David Raven holds the Guinness World Record as the 'Most Durable Actor' for his 4,575 performances as Major Metcalf, and the late Nancy Seabrooke set a record with her 15-year tenure as an understudy.

Under the direction of Philip Franks, who joined the production as director in May 2024, this enigmatic ensemble cast continues to uphold the legacy of The Mousetrap, bringing the eccentric cast of characters to life (and death) each night. The current cast brings fresh energy and talent to this timeless classic:

Who plays Mollie Ralston in The Mousetrap?

Saranna Parlone takes on the role of Mollie Ralston. Her previous credits include Magic at the Musicals (Royal Albert Hall) and Tim Rice: My Life in Musicals (London Palladium). Parlone's nuanced portrayal of Mollie adds depth to the character, drawing viewers into the suspenseful world of Monkswell Manor.

Who plays Giles Ralston in The Mousetrap?

Ben Riddle brings a dynamic energy to the stage in his performance as Giles Ralston. No stranger to a mystery - his last name is Riddle, after all! - this isn’t the first time Ben is making Monkswell Manor his home, having starred in The Mousetrap back in 2016. Riddle's interpretation of Giles balances charm and tension, contributing significantly to the play's intricate narrative.

Who plays Christopher Wren in The Mousetrap?

Stefan Chanyaem leaps into the shoes of the enigmatic and eccentric Christopher Wren. Chanyaem’s previous credits include; Macbeth and another Agatha Christie mystery, And Then There Were None. Riley captures Wren's eccentricities and mystery, keeping audiences guessing about his true intentions.

**Who plays Mrs. Boyle in The Mousetrap? **

Joanne Henry delivers a commanding performance as the stern and critical Mrs. Boyle. Henry’s previous credits include; The Importance of Being Earnest, Curious Incident of the Dog in the Nighttime and Jane Eyre. Here, she brings the same depth to her portrayal of Mrs. Boyle, adding layers to the play's suspense.

Who plays Major Metcalf in The Mousetrap?

James Staddon takes on the role of Major Metcalf, infusing the character with authenticity and gravitas. Staddon’s previous credits include; Cyrano De Bergerac, Les Miserables and Miss Saigon. Staddon’s Major Metcalf is both reassuring and enigmatic, contributing to the play's intricate web of suspicion.

Who plays Miss Casewell in The Mousetrap?

Anna Rawlings plays the enigmatic Miss Casewelly. Another Agatha alumna, Rawling’s recently starred in Witness for the Prosecution at London’s County Hall. She brings a fresh perspective to Miss Casewell, keeping audiences intrigued by her mysterious past.

Who plays Mr. Paravicini in The Mousetrap?

Dugald Bruce-Lockhart brings charisma and intrigue to the role of Mr. Paravicini. No stranger to an Agatha Christie mystery, he also starred in Witness for the Prosecution at London’s County Hall, alongside Rawlings (Miss Casewell). Other credits include; MAMMA MIA! And The 39 Steps

Who plays Detective Sergeant Trotter in The Mousetrap?

Ben Galvin steps into the role of Detective Sergeant Trotter, bringing determination and intensity to the character. The final cast member, and the third to have also starred in Witness for the Prosecution at London’s County Hall! This cast certainly have a connection to Christie. As Trotter, he keeps the audience engaged as he unravels the mystery at Monkswell Manor.

The Mousetrap full West End cast

The Mousetrap West End cast is completed by Nancy Doubledee (Understudy Mollie/Casewell), **Clive Marlowe **(Understudy Major Metcalf & Mr Paravicini), Richard Parnwell (Understudy Christopher Wren/Trotter), Barnaby Jago (Understudy Trotter/Ralston) and Bella Farr (Understudy Mrs. Boyle) 

Book The Mousetrap tickets

So, there are your suspects. But who did it? Find out by booking tickets to the thrilling murder mystery today.