Mystery and suspense surround a seance in a snowbound house on the edge of Dartmoor, where the prediction of a grisly murder is only the precursor to an ingenious deadly crime and one of Agatha Christie's most gripping thrillers... In a remote house in the middle of Dartmoor, six shadowy figures huddle around a small 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, his home is six miles away and, with snow drifts blocking the roads, someone will have to make the journey on foot...