Fall gives way to winter in the Colorado mountains, ushering in snow, pumpkin spice, the bugling of elk, and murder . . . Estes Park bustles with tourists and locals for its Halloween celebration, and Winifred Page and her corgi sidekick, Watson, are enjoying their favorite pastries as they greet trick-or-treaters outside the Cozy Corgi Bookstore and Bakery. But a chilling afterhours break-in at the charming bookshop leaves Fred and Watson shaken, especially with its connection to a recent poaching incident in the national park. By daybreak, on a cool morning walk through town, Fred discovers the body of one of the poachers . . . When Fred's close friend, park ranger Leo Lopez, asks for her help in proving the innocence of a fellow ranger, Fred and Watson join the investigation. But with every uncovered clue hinting the police have the right person, Fred must uncover a mystery whose webs reach into the past and her experiences over the past year. Even amid the beauty of the snow covering the mountains and the twinkling lights of the beginning holiday season, Fred and Watson won't make it to Thanksgiving without facing dangers and revelations that will change their lives.