Murder and mayhem strike when a small group of people are confined to an island in the middle of a New Zealand lake in one of Ngaio Marsh's last – and best – novels. The luxury mansion on New Zealand's Lake Waihoe is the ideal place for a world-famous soprano to rest after her triumphant tour. Among the other guests are Chief Superintendent Alleyn and his wife - but theirs is not a social visit. When tragedy strikes, and isolated by one of the lake's sudden storms, Alleyn faces one of his trickiest cases...