The Hume-Frazer family was cursed. For four generations the head of the family had met a violent end. When the fifth Baronet is found murdered on the family estate, Reginald Brett, barrister-detective, is called in to clear the name of the murdered man's cousin, David Hume. A witness claims to have seen him commit the murder at the same time another witness saw him asleep in the library. Does David Hume have a double? Or was the murderer the Italian...