About the work
In 1947 Agatha Christie wrote a half-hour radio play, “Three Blind Mice”, for the BBC to mark Queen Mary’s 80th birthday; it was broadcast on 30 May 1947. She reworked the material into a short story in 1948 and then expanded it into a full-length stage play; the premiere took place on 6 October 1952 at the Theatre Royal, Nottingham, and after a regional tour the play opened at the Ambassadors Theatre in London on 25 November 1952. In 1974 the production moved to the neighbouring St Martin’s Theatre, where it still runs today.
Plot
At the remote country house Monkswell Manor, newlywed hosts Mollie and Giles Ralston are cut off with their first guests by heavy snow when a radio bulletin warns of a killer on the loose. A police officer soon arrives on skis and explains that the culprit is likely already among the guests; the group gradually uncovers that the crime is linked to an earlier case of child abuse. A second murder follows inside the house, and the killer’s true identity is revealed only near the very end.
Cultural significance
“The Mousetrap” is regarded as the longest continuously running play in the world and has been performed in London’s West End since its 1952 opening, interrupted only by the pandemic theatre closures of 2020–21. Audiences are still traditionally asked not to reveal the ending after each performance.