It Could Be Any One Of Us by Alan Ayckbourn

In a windswept country house a family of artistic failures wrangles over a will: a detective who has never solved a case; a writer whose works have never been published, an artist who’s never shown a painting and a composer whose compositions have never been performed, and a dysfunctional teenager. Here are the prime ingredients for a murder mystery, but the victim is not who it should be, the murder’s identity changes overnight. Throw in some tongue in cheek humor for some comedic thrills.