FBI special agent Mercy Kilpatrick has been waiting her whole life for disaster to strike. A prepper since childhood, Mercy grew up living off the land--and off the grid--in rural Eagle's Nest, Oregon. Until a shocking tragedy tore her family apart and forced her to leave home. Now a predator known as the cave man is targeting the survivalists in her hometown, murdering them in their homes, stealing huge numbers of weapons, and creating federal suspicion of a possible domestic terrorism event. But the crime scene details are eerily familiar to an unsolved mystery from Mercy's...

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Raised by a family of survivalists, FBI agent Mercy Kilpatrick can take on any challenge--even the hostile reception to her homecoming. But she's not the only one causing chaos in the rural community of Eagle's Nest, Oregon. At first believed to be teenage pranks, a series of fires takes a deadly turn with the murder of two sheriff's deputies. Now, along with Police Chief Truman Daly, Mercy is on the hunt for an arsonist turned killer.

Still shunned by her family and members of the community, Mercy must keep her...