Following a Comanchero raid led by El Carcinero - the Butcher - young Emily Mercer has lost just about everything: her folks, her home and her future. But she'd damned if she was going to lose her beloved stallion, El Diablo, as well. With the stallion already sold to Stillman J. Stadtlander - the ruling rancher of Santa Rosa - Emily faces a ruthless opponent, who has the enigmatic gunfighter Latigo Rawlins on his payroll. But she has an ace of her own: a man, known only as Drifter, is backing her every step of the way. And if Emily doesn't get El Diablo back there'll be hell to pay.