TIME is running out to dig out your trenchcoat, dust off that fedora and find out whodunnit in Agatha Christie's gritty The Mousetrap.

The scene is set when a motley crew gathered in a country house cut off by the snow discover, to their horror, that there is a murderer in their midst. But who is it? One by one the suspicious characters reveal their past secrets until at the last, nerve-shredding moment the killer and the motive are revealed.

In her own inimitable style, Dame Agatha Christie creates an atmosphere of shuddering suspense and a brilliantly intricate plot where murder lurks around every corner.

Fancy yourself as a super sleuth? During the interval, you'll be able to submit your killer guesses.

All correct guesses will be entered into a draw. The winner of the mystery prize will be announced at the end of each performance.

The Mousetrap runs at the Wyvern Theatre until tomorrow night. Tickets start at £24.

To book go to swindontheatres.co.uk or call 01793 524481.