The play in question, at the centre of its conceit, is titled The Murder At Haversham Manor; purporting to have been written by Susie H.K. Brideswell, in reality, a fictional author, and performed by the equally fictional Cornley Polytechnic Drama Society, it’s a 1920s murder mystery comedy that opens with the slaying of Charles Haversham on the night of his engagement to Florence Colleymoore. The CPDS are gamely attempting to do it justice, but suffice to say they put the amateur in ‘amateur theatre company’, and the result is slapstick and farce.