The Caswell & Lombard investigative duo receives an invitation from longtime friends to visit their lodge in Bigfork, Montana and enjoy several days of tranquility far away from the sizzling and frenzied streets of Miami Beach. Gaston "Guy" Lombard has not been himself since the sleuths returned home from a case taking them to the Greek island of Crete, and Claire believes the trip will do him good. But shortly after the two arrive, a cold-blooded murder—a crime bearing similarities to a recent rash of burglaries plaguing a well- to-do enclave in the neighboring community of Whitefish—pulls them into an ominous plot and they are called upon by the local sheriff to help solve the crime. A myriad of suspicious characters immediately surfaces in the whirlwind investigation, and the investigators are faced with the horrific reality that their adored friends might top the list. With an ensemble of unforgettable characters and thrilling plot twists, Sapphire Trails...