Poisoned Dollars. Byron James Westerns, #1

In the quiet Kansas town he now calls home, Byron James works as a school teacher, far removed from the bloodshed of his younger years. But peace is a fragile thing, and James's past is riding hard on his trail. Once a war hero turned cowboy, James made a single, tragic choice, which cost him a decade behind bars and marked him for death. When a former student turns outlaw and forces James into hiding stolen money, the threat turns personal-and deadly.
With his wife's life at stake and a relentless U. S. Marshal on his trail, James must walk a razor's edge between justice and vengeance. A gritty western set on the American frontier, POISONED DOLLARS is the first book in the Byron James Westerns series by Stuart G. Yates.