2 May – 6 June 2026
Regent’s Park Open Air Theatre

A new mystery by Joel Horwood
Directed by Sean Holmes

A Regent’s Park Open Air Theatre production

‘Solve this, Sherlock. It may be a game to you; it isn’t to me.’

London, 1890, a city rapidly expanding, devouring all in its path. Fresh off the success of his first big case, Sherlock Holmes misuses his time, until an unknown woman and a mysterious jewel arrive at 221b Baker Street.

As the chase begins, and with lives on the line, can Holmes and Watson pull back the curtain on the big show and reveal the mastermind behind this deadly conspiracy.

From writer Joel Horwood (The Ocean at the End of the Lane, National Theatre, West End & Tour) and directed by Sean Holmes (Pinocchio, The Merry Wives of Windsor, Shakespeare’s Globe), comes a thrilling new adventure, hurtling through the streets of London and down the River Thames to the heart of Regent’s Park.

Creatives include Lisa Aitken (Co-Costume Designer & Supervisor); Jherek Bischoff (Composer); Charlotte Broom (Movement Director); Stuart Burt CDG, CSA (Casting Director); Ryan Day (Lighting Designer); Carole Hancock (Wigs, Hair & Make Up Designer & Supervisor); Sean Holmes (Director); Elena Peña (Sound Designer) and Grace Smart (Set & Co-Costume Designer).

Cast includes Joshua James as Sherlock Holmes.

Supported by Cockayne Grants for the Arts, a Donor Advised Fund, held at The Prism Charitable Trust.

By agreement with the Conan Doyle Estate.