Clio is staying with her aunt, Hester, at Bridge House on the edge of Exmoor. A beautiful house, it is the scene of many happy childhood memories. But Clio has no idea that it was the setting for a terrible incident after the Second World War.
Ten invited guests on an island… Ten strangers, apparently with little in common, are lured to an island mansion off the coast of Devon by the mysterious U.N.Owen. Over dinner, a record begins to play, and the voice of an unseen host accuses each person of hiding a guilty secret. That evening, former reckless driver Tony Marston is found murdered by a deadly dose of cyanide. The tension escalates as the survivors...