Sherlock Holmes and the 12 Days of Christmas is a musical comedy play by David Reed and Humphrey Ker (two members of The Penny Dreadfuls), with songs by Tim Rice and Andrew Lloyd Webber.
A series of deaths in the West End embroils Sherlock Holmes and Dr. Watson in a mystery linked the Twelve Days of Christmas.
The play had its world premiere at the Birmingham Repertory Theatre beginning previews 14 November 2025 (with a press night on 20 November) running until 18 January 2026 (after being extended from 11 January due to popular demand), directed by Phillip Breen with Becky Hope-Palmer and designed by Mark Bailey.
In addition to writing, Ker and Reed also star as Holmes and Watson, respectively. The cast also includes Margaret Cabourn-Smith as Mrs. Hudson, and John Kearns as Inspector Lestrade. The full cast was announced on 30 September 2025.