The Sittaford Mystery is Dame Agatha at her most intriguing, as a séance in a snowbound house predicts a particularly grisly murder. In a remote house in the middle of Dartmoor, six shadowy figures huddle around a table for a seance. Tension rises as the spirits spell out a chilling message: "Captain Trevelyan... dead... murder." Is this black magic or simply a macabre joke? The only way to be certain is to locate Captain Trevelyan. Unfortunately,...