Mrs Willett and her daughter host an evening of "table-turning" (a séance) on a snowy winter's evening in Dartmoor. The spirit tells them that Captain Trevelyan is dead. The roads being impassible to vehicles, Major Burnaby announces his intention to go to the village on foot to check on his friend, where he appears to find the prediction has come true. Emily Trefusis, engaged to Trevelyan's nephew, uncovers the mystery along with the police.
