Backstage at the Causton Amateur Dramatic Socirty's production of Amadeus nerves are fraying. On top of the fractious cast hierarchy imposed by Harold Winstanley director & would-be impresario cast member Esslyn Carmichael suspects his wife is having an affair with the leading man. & where better to settle scores than the stage? On opening night Chief Inspector Tom Barnaby attends purely as a member of the audience. But when someone turns Esslyn's final grand gesture into a very gruesome coup de theatre Barnaby suddeny finds himself centre stage...