Qwill agrees to join his beloved Polly on a group tour of Scotland to keep her safe from the Pickax Prowler. On their sixth day in Scotland, however, the tour organizer--Polly's best friend Irma--dies of an apparent heart attack, and Qwill suspects foul play. Koko and Yum Yum may have been miles away from the scene of the crime, but they're just a whisker away from cracking the case.