Clay Nash went undercover with orders to infiltrate the gang of a cold-blooded outlaw named Zach Forrester. To do that, he assumed the identity of a dead man. But from the very start, nothing about his mission went right. To begin with, Clay's trail crossed that of an enemy from his past who was still itching to get revenge for an old score. Then he wound up behind bars, mistaken for the outlaw he was pretending to be. And then Zach Forrester broke him out of jail, figuring he was an old friend from Yuma Pen. That was enough to tip the balance altogether ... against Wells Fargo's toughest troubleshooter!