No longer booking
  • Venue Park Theatre, London
  • Performance dates Booking to 27 June 2026
  • Running time 2 hours 20 minutes (including interval)
  • Age guidelines 10+

Get Whodunnit [Unrehearsed] 4 was at Park Theatre in London.

This hit fundraiser played until 27 June 2026, featuring a different celebrity guest Sheriff at every performance — stepping into the chaos completely unrehearsed!

Park Theatre’s cult fundraising favourite Whodunnit [Unrehearsed] came back for a fourth instalment, this time heading straight into the Wild West. Expect murder, mayhem, musical mischief and a town full of suspicious characters, all brought to life by a company of actor-musicians and a live saloon pianist (with audience singalongs encouraged).

Welcome to Graveside, a dusty frontier town where gold fever is rising, treasure has gone missing, and not everyone is who they claim to be. There are strangers in town, hobby horses roaming free, and a Reverend who may not practice what he preaches.

The twist? Each night, a different celebrity guest Sheriff takes centre stage with no rehearsal, no script knowledge, and only an earpiece and their instincts to guide them through the investigation.

With 63 celebrities appearing across the run, no two performances are the same. All guests appear unpaid, helping raise vital funds for Park Theatre, which runs without Arts subsidy.

What’s New for Whodunnit [Unrehearsed] 4?

For 2026, Park Theatre introduced cabaret seating in Park200, bringing the audience even closer to the action. There’s also a brand-new add-on experience: step into The Last Chance Saloon, a Wild West-themed space next door where you can raise a glass and soak up the frontier atmosphere.

Why Book Whodunnit [Unrehearsed] 4 Tickets?

  • A different celebrity Sheriff every night
  • Completely unrehearsed performances (expect chaos)
  • Wild West setting with live music and singalongs
  • Sir Ian McKellen returns to voice the show
  • Limited London run at Park Theatre
  • Celebrity guests appear unpaid to support the theatre

Book Whodunnit [Unrehearsed] 4 Tickets

For a London theatre night that’s genuinely unpredictable—part murder mystery, part Wild West romp, part celebrity chaos—Whodunnit [Unrehearsed] 4 is as close as it gets.

Last Updated: 13 May 2026

Diamonds are a girl’s best friend – or are they? As the temperature plummets, tensions rise and the bodies keep on falling. Can our illustrious Inspector keep this journey on track or will this be a bus replacement service for everyone? Murder, mayhem and this time… magnificent magic!

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Photos

Performance Information

Check booking calendar for full details

Stars and Creatives

Who is in the cast of Whodunnit [Unrehearsed] 4?

Featuring the voice of Sir Ian McKellen

63 celebrity guest will perform across the run with confirmed guest Sheriffs.

Newly announced guests are:

  • Jason Isaacs
  • Michelle Dockery
  • Romesh Ranganathan
  • Angela Griffin
  • Milton Jones

Guests announced across the run include: 

  • Amanda Abbington
  • Gillian Anderson
  • Clive Anderson
  • Adjoa Andoh
  • Sanjeev Bhaskar
  • Hugh Bonneville
  • Gyles Brandreth
  • Marcus Brigstocke
  • Jim Broadbent
  • Simon Callow
  • Liz Carr
  • Munya Chawawa
  • Julian Clary
  • Michelle Collins
  • Nina Conti
  • Benedict Cumberbatch
  • Les Dennis
  • Anne-Marie Duff
  • Adrian Dunbar
  • Kerry Ellis
  • Martin Freeman
  • David Haig
  • Harry Hill
  • Adam Hills
  • Tamsin Greig
  • Toby Jones
  • Paterson Joseph
  • Russell Kane
  • Damian Lewis
  • Matt Lucas
  • Chris McCausland
  • Tim McInnerny
  • Ian McKellen
  • Gareth Malone
  • Gabriel Macht
  • David Mitchell
  • Al Murray
  • Dara Ó Briain
  • Dermot O’Leary
  • Tamzin Outhwaite
  • Katherine Parkinson
  • Sara Pascoe
  • Joe Pasquale
  • Simon Pegg
  • Sue Perkins
  • Clarke Peters
  • Iwan Rheon
  • Rob Rinder
  • Gaby Roslin
  • Suzi Ruffell
  • Greta Scacchi
  • Alison Steadman
  • Rhashan Stone
  • Meera Syal
  • Emma Thompson
  • Cathy Tyson
  • Tim Vine
  • Bradley Walsh
  • Mark Watson
  • Jodie Whittaker
  • Olivia Williams
  • Gary Wilmot
  • Greg Wise 

Who are the creative team of Whodunnit [Unrehearsed] 4?

By: Jez Bond & Mark Cameron
Director: Jez Bond

Important Notes

Photos: Gaby Roslin and cast

Venue Information

Park Theatre , Clifton Terrace, London, N4 3JP

Nearest Tube or Train: Finsbury Park (National Rail, Victoria Line, Piccadilly Line)

Nearest Buses: 210, W3, W10, 4, 29, 153, 253, 254, 259, N23, N253, N279

Directions

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Frequently Asked Questions

Whodunnit [Unrehearsed] 4 is playing at the Park Theatre in London
The running time of Whodunnit [Unrehearsed] 4 is 2 hours 20 minutes (including interval)
The age recommendations for Whodunnit [Unrehearsed] 4 are: 10+
Yes, Whodunnit [Unrehearsed] 4 has matinee performances on the following days: Tuesday, Thursday, Saturday

Whodunnit [Unrehearsed] 4 is a Wild West-themed comedy murder mystery at Park Theatre in London, featuring a different celebrity guest Sheriff in every performance who appears completely unrehearsed.

The show follows a script, but the celebrity guest Sheriff is completely unrehearsed and does not know the lines in advance, creating an unpredictable and improvised feel.

Confirmed celebrity guest Sheriffs include Emma Thompson, Gillian Anderson, Adrian Dunbar, Jim Broadbent, Sandi Toksvig, Sanjeev Bhaskar, and Hugh Bonneville, with more names still to be announced.

Yes. Sir Ian McKellen returns to lend his voice to the show.

No. Park Theatre does not usually announce which celebrity Sheriff is appearing on which date, so the guest star remains a surprise.

A total of 63 celebrities will appear across the run of Whodunnit [Unrehearsed] 4, with further names expected to be announced.

The show is set in the frontier town of Graveside, where stolen treasure, suspicious strangers and rising tensions lead to murder and mystery. The celebrity Sheriff must solve the case without rehearsal.

The Last Chance Saloon is a Wild West-themed space next to the theatre where audiences can relax, have a drink and extend the experience. Some ticket options include access.

Each performance features a different celebrity Sheriff who has not rehearsed, meaning the delivery, timing, mistakes and improvisation change every night.

Yes. Because it is a limited London run with major celebrity guest stars, booking in advance is strongly recommended.

No, sorry, Whodunnit [Unrehearsed] 4 has now completed its run and is no longer on sale.

News about Whodunnit [Unrehearsed] 4

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