FBI agent Sam O'Rourke was on an unsanctioned mission to hunt down his sister's murderer. The steely-eyed lawman's investigation led him to Jessica Taylor–the one victim, in a string of many, who'd escaped with her life and whose missing memories made her a target for a demented madman.

Posing as a ranch hand, Sam was determined to gain the fragile woman's trust to solve this crime. However, Sam hadn't counted on this lone witness awakening his deadened heart with her sumptuous beauty and unflinching courage. A case that had begun as an unrelenting thirst for vengeance suddenly roused his every protective instinct. Now Sam had an intensely personal stake in reeling in a killer….