More names added for Park Theatre’s star-studded Whodunnit [Unrehearsed] 4 as show extends

Park Theatre has announced further names for Whodunnit [Unrehearsed] 4, the latest instalment of its fundraising comedy event.

Two final shows have been added on 28 June at 2:30pm and 7:30pm.

Set in the Wild West town of Graveside, the production sees the entire venue transformed into an immersive environment, extending from the street outside through the foyers, bars and auditoria.

Each performance will feature a different celebrity guest taking on the central role of Sheriff without rehearsal, performing with the aid of an earpiece delivering lines live during the show. Ian McKellen will also provides voice work across the production.

Previously announced guest sheriffs include Gillian Anderson, Adjoa Andoh, Sanjeev Bhaskar, Hugh Bonneville, Gyles Brandreth, Jim Broadbent, Liz Carr, Julian Clary, Benedict Cumberbatch, Anne-Marie Duff, Martin Freeman, Matt Lucas, Meera Syal, Emma Thompson, Cathy Tyson, Jodie Whittaker and more.

The new names revealed today are with Jason Isaacs, Michelle Dockery, Romesh Ranganathan, Angela Griffin and Milton Jones.

They will appear alongside a supporting cast including Toby Baddeley as Buck Steed, Caroline Deverill as Dawn Frencham, Gabriel Fogarty-Graveson as Jim Ranson, Iona Fraser as Verity Hargreaves, Edward Kaye as James Early, Matthew Romain as Rev Virgil, Susanna Wolff as Meg Frencham, and Ian Oakley.

The event serves as a fundraising initiative for Park Theatre, which operates without regular public subsidy. Income from the run will support the theatre’s building costs, new writing development and community and education activity.

For the 2026 edition, audiences enter Graveside upon arrival, with the theatre’s exterior redesigned to resemble a Western streetscape. The venue’s bar levels feature themed decoration, including hay bales and barrels. Park90 will become The Last Chance Saloon, accessible to cabaret-seating and Band A+ ticket holders, offering themed food and drink, live performances, and interactive elements.

A community chorus performs throughout the building, interacting with audiences and staging scenes across public areas. Attendees will be encouraged to arrive early and dress in costume, with a dressing-up station and photo booth available. Front-of-house teams are also in character.

In the Park200 auditorium, a house band featuring piano, banjo, fiddle and percussion perform a pre-show set. Some seating is be removed to allow for cabaret-style tables, and the production will involve audience interaction throughout, including opportunities for ticket holders to take part in onstage bartender roles.

The show features music and audience participation, alongside a themed food and drink selection.