Robert B. Parkers Bull River

Itinerant lawmen Virgil Cole and Everett Hitch are back in the saddle with guns blazing in this gritty, intense addition to the "New York Times"-bestselling series.
After hunting down murderer and bandito Captain Alejandro Vasquez, Territorial Marshal Virgil Cole and Deputy Everett Hitch return him to Citadel to stand trial. No sooner do they remand Vasquez into custody when a major bank robbery occurs and the lawmen quickly find themselves tasked with a new job: investigate the robbery of Comstock Bank, recover the loot, and bring the criminals to justice.
But when their primary suspect is found severely beaten outside a high-class brothel and the suspect turns out to be using a false identity to escape a torrid past, it is Vasquez who becomes the key to their investigation. Cole and Hitch are soon on the trail of the money, two calculating brothers, and the daughter of Saint Louis's most prominent millionaire in a Cain-and-Abel story that brings revenge to a whole new level.