quot Nove Ospiti per un Delitto quot  is a mediocre giallo in the tradition of Agatha Christie s  quot And Then They Were None quot   Nine members of the same family go to an island, where nobody lives - but the head of the family  Arthur Kennedy  owns a nice house there  Problem is that he and his three sons keep a dark secret, and this dark secret begins to haunt them as soon as they are on the island  One by one they fall victim to a mysterious killer     IMDb