Libby and the gang visit the Isle of Wight for the funeral of an old friend, Matthew DeLaxley. For once, there is nothing suspicious aobut the death - but the invitation to the funderal comes from Matthew's elderly cousins, who do have an unexplained death in the family. As her best friend, Harry, seems to be involved in the mystery somehow, Libby is determined to ignore the growing reluctance of the cousins to help as she investigates a decades-old puzzle.