Meet the cast of The Mousetrap

Published on 10 March 2025

Last updated on 8 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 Georgina Fairbanks as Mollie Ralston and Cai Brigden as Giles Ralston, and Thomas Dennis 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?

Georgina Fairbanks takes on the role of Mollie Ralston. Her previous credits include The Unicorn and Wilko: Love, Death, & Rock 'n' Roll. Fairbank'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?

Cai Brigden brings a dynamic energy to the stage in his performance as Giles Ralston. No stranger to a period drama, Brigden was most recently seen in Netflix's global hit, Bridgerton. Brigden's interpretation of Giles balances charm and tension, contributing significantly to the play's intricate narrative.

Who plays Christopher Wren in The Mousetrap?

Joshua Riley leaps into the shoes of the enigmatic and eccentric Christopher Wren. Like Brigden, he's no stranger to The Ton, having starred in Queen Charlotte: A Bridgerton Story. Riley captures Wren's eccentricities and mystery, keeping audiences guessing about his true intentions.

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

**Nicky Goldie **delivers a commanding performance as the stern and critical Mrs. Boyle. No stranger to an Agatha Christie thriller, Goldie has previously starred in Witness for the Prosecution at the London County Hall, which showcased her ability to embody complex characters. 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?

**Christopher Wright **takes on the role of Major Metcalf, infusing the character with authenticity and gravitas. Another Witness for the Prosecution alumni, Wright demonstrated his unparalleled range in the courtroom thriller. Wrights Major Metcalf is both reassuring and enigmatic, contributing to the play's intricate web of suspicion.

Who plays Miss Casewell in The Mousetrap?

Kate Handford makes her West End debut to play the enigmatic Miss Casewelly. Though her role in the Edinburgh Fringe hit Queen has already made her theatre royalty! She brings a fresh perspective to Miss Casewell, keeping audiences intrigued by her mysterious past.

Who plays Mr. Paravicini in The Mousetrap?

Stephen Ventura brings charisma and intrigue to the role of Mr. Paravicini. No stranger to a detective drama, his previous work includes *An Inspector Calls *and *Sherlock Holmes and the Crimson Cobbles. *Interestingly, Buchan's connection to The Mousetrap dates back to his childhood when he staged an unauthorized school production, leading to a legal warning from the producers. Now, he joins the official West End cast, bringing his journey full circle.

Who plays Detective Sergeant Trotter in The Mousetrap?

Thomas Dennis steps into the role of Detective Sergeant Trotter, bringing determination and intensity to the character. His lead performance in Private Peaceful showcased his ability to portray contradictory and complex emotions, and 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 Liv Koplick (Understudy Mollie/Casewell/ASM), **Clive Marlowe **(Understudy Major Metcalf & Mr Paravicini), Richard Parnwell (Understudy Christopher Wren/Trotter/ASM), Ben Riddle (Understudy Trotter/Ralston) and Catherine Sherman (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.