Who in her right mind would turn down a free luxury cruise to the idyllic South Pacific? Certainly not Judith McMonigle Flynn - which is why she and her closer-than-a-sibling cousin Renie Jones are leaving behind the stress of the Hillside Manor B&B and hightailing it down to the San Rafael in San Francisco Bay . . . which, unfortunately, is as far out to sea as they will get when a corpse is found stuffed in the piano.