In the latest installment of Peter Bowen's acclaimed mystery series, Gabriel Du Pre investigates a century-old crime

Lieutenant John Patchen has come to Montana to persuade Chappie Plaquemines, his former gunnery sergeant in Iraq and the son of Gabriel Du Pre's girlfriend, to accept the Navy Cross. First, however, Du Pre and Patchen must find the wounded marine, who was last seen drinking heavily in the Toussaint Saloon. They locate him soon enough, disheveled and stinking of stale booze, but a sobering visit to a medicine man's sweat lodge reveals a much greater mystery:...