Here each of the heroes is a victim, a criminal, and a detective. They gathered on a rocky English island in a luxurious mansion. But not familiar with each other. And the owner, Alain Owen, was not seen before. A mysterious voice, heard at dinner, accuses those present in the crimes committed, left without punishment. Judge and inspector of Scotland Yard, the governess and the social hang-up ... Soon the strange death alternately overtakes the guests ... Who is this mysterious avenger? Where is hidden the background of black humor, which is imbued with a novel? On the same work by Agatha Christie.