Trouble in Texas

There's trouble in Texas. John Whyte late colonel Union Cavalry Corps is Alan Pinkerton's newest detective and he's more than ready to answer the call for help from his friend and former commander General Phil Sheridan. Some unreconstructed rebels are intimidating and driving out of Texas the Union tax collectors. In addition murderous outlaws who have no regard for human life are robbing nearly every Union Army payroll shipment. Are the two seemingly separate problems somehow connected? If so why? John Whyte is going to find out and if trouble comes his way because of it then let the lead start to fly.