Max Brand 
Silvertip’s Trap [EPUB ebook] 

Bill Naylor had only one hero in his life—famed outlaw Barry Christian. And when blind luck threw the two men together, Naylor was ready to tackle the toughest job Christian had up his sleeve—the murder of Christian’s dread enemy, Jim Silver. It was Naylor’s chance to prove himself, and he knew Christian’s plan couldn’t fail. But there was one vital factor Christian didn’t take into account—and that factor was going to decide whether Naylor lived or died!