A serial killer follows Du Pré from Washington, DC, back to Montana A lost and frightened horse plods down the National Mall, startling the crowd. When Gabriel Du Pré spots the confused animal, the connection is immediate, for neither of these creatures belongs in the sweltering heat of a DC summer. Du Pré, a Métis Indian from the wilds of Montana, calms the horse and leads it to the nearest policeman. Du Pré is in Washington to play his people's music for a Smithsonian festival, but after leading the horse to safety, he encounters a murder instead. The dead woman is Cree Indian, come down from Canada to sing in the festival. Du Pré tries to put her death out of his mind and returns to Montana, but more killings follow: each time with a primitive weapon, each time foretold by a local shaman. As the body count rises and the killer closes on Du Pré, the lawman vows to never again make the mistake of leaving Montana.