Step into the dangerous world of 1930s Narrow Marsh this Christmas as the National Justice Museum hosts an immersive gangland murder mystery experience, where a festive gathering at the Shire Hall erupts into chaos after crime boss Boon is imprisoned. 

It’s up to you, a loyal member of The Boon Gang, to uncover the traitor before the gang collapses. 

Priced at £59.99 per person, the evening includes a three-course Christmas meal, an arrival cocktail or mocktail, and a full interactive investigation in which guests explore the museum, interrogate suspects, gather clues, and solve the case before the dramatic final reveal in the courtroom. 

Running on selected dates from 28 November to 20 December (with some dates already sold out or limited), the night begins with arrivals from 6–6:45pm, followed by the murder mystery, dinner served from 8:15pm, and the grand conclusion around 10:30pm. 

Guests must provide dietary requirements after booking, and all payments are non-refundable, making this a thrilling, atmospheric festive night out filled with betrayal, mystery, and 1930s underworld intrigue.

Book here now