Quincannon

"Western. John Quincannon is an agent for the United States Secret Service. His latest assignment begins in San Francisco, on the trail of a band of counterfeiters who have left a trail of phoney dollars and death from Frisco to Idaho."
"Investigating a huge counterfeiting operation working out of Silver City, Idaho, treasury agent John Quincannon poses as an alcoholic patent medicine salesman to follow a trail of deceit, betrayal, and murder."@en
"Secret Service agent John Quincannon is called on to bring down a major counterfeiting ring responsible for the death of one of his colleagues."
"Secret Service agent John Quincannon has found little joy in his life since a stray bullet caught an innocent, expectant young woman, killing both mother and child. Now, still in mourning a year later, Quincannon can only find solace at the bottom of a jug of sour mash. But he'll have to buck up--and sober up--for his next mission: The Service needs Quincannon to bring down a major counterfeiting ring responsible for the death of one of his colleagues. And staying sober won't be easy when there's a young lady in town who's a dead ringer for his late victim ..."
"In 1890s Idaho, bringing down a major counterfeiting ring forces a troubled Secret Service agent to come face to face with his tragic past."