Death is a stalker on the luxury river cruise ship Grand Queen. Retired security investigator Jake Vincent and his wife, Barbara, have accepted a grateful FBI's gift of a Paris vacation. The five-star hotel stay and Seine River wine cruise is a thank-you for Jake's efforts in helping solve a seventeen-year missing person's cold case in the Vincent's small resort mountain town in California. They agree to keep watch on a fleeing alleged Ponzi fraud couple who are also passengers on the ship. Their friend FBI agent Sam Jenkins in Washington DC and French National Police detective Louie Bernard are involved in the "perp watch." Events turn mysterious when it is determined that a Russian Mob-hit team may be a major player. More danger awaits Jake and Barbara when they return home as they discover that they themselves are the target of a revenge-seeking family member of the old cold case criminal arrest. The local deputy police inspector who worked with Jake is also a target. Together, with the FBI's help, they try to prepare for a worst-case scenario in their mountain wilderness town.