An all-star cast has been announced for the world premiere production of Whodunnit [Unrehearsed] at the Park Theatre in London.

Every night, a different guest performer will step onstage to join the rehearsed ensemble of a scripted murder mystery play, having attended no rehearsals, read no script, nor received any direction. Armed only with a hidden earpiece to receive instructions, they will endeavour to solve the crime in real time.

Narrated by the voices of acting giants Ian McKellen and Judi Dench, the murder-mystery spoof is set in the usual isolated manor with a storm clouds brewing and a stranger tapping at the door.

Actors who will appear in the piece include: Clive Anderson, Gillian Anderson, John Bishop, Gyles Brandreth, Marcus Brigstocke, Jim Broadbent, Simon Callow, Ronan Keating, Damian Lewis, Maureen Lipman, Joanna Lumley, Juliet Stevenson, Meera Syal, Catherine Tate, Tim Vine and Ruby Wax. They will all have their lines fed to them live on stage via an earpiece as they attempt to crack the case.

Gillian Anderson said: “I’m performing at Park Theatre to help raise funds for the charity. With no public subsidy, they need to fundraise over £250,000 a year just to keep the doors open.”

“The monies raised from this production’s higher ticket prices will support their core ambition to present accessible theatre over the coming years and to further their work with the local community. A number of £10 day tickets will also be available. I do hope people will come and enjoy, and reap the benefit of supporting this fantastic cause.”

Artistic Director, Jez Bond, said: “We’re very fortunate that the leading actors in our country understand the power and importance of smaller scale theatres and the challenges they face. I am grateful to everyone who has donated their time to help raise vital funds by performing this show – and am thrilled they’re so up for it!”

The actors are donating their time in order to raise money for the theatre. Audiences will only discover which star will be at each performance when they appear onstage. More guest actors to be announced.

Whodunnit [Unrehearsed] will run from 15 July 2019 until 27 July 2019 at the Park Theatre, followed by a run at the Edinburgh Festival Fringe from 31 July 2019 until 27 August 2019.