Deep in the Alaskan wilderness, a mummified body is discovered in the ice, the victim of a bizarre ritualistic killing that happened nearly six thousand years ago. For journalist Maura County, this story is her ticket to the big time?if she can get the help of the FBI's top profiler.

Special Agent Ulysses Grove is the best of the best?a born manhunter. He's also a man on the edge, haunted by both personal tragedy and a recent spate of horrific, unsolved homicides. Now, in a remote lab, he's about to make a shocking discovery. Everything about the prehistoric murderer?signature, M.O., the tiniest of details?matches up to the serial killer who has eluded Grove for months.

As past and present collide, County and Grove are plunged into a nightmare journey that will take them into the darkest reaches of the human heart as they try to stop a cycle of evil as eternal and powerful as time itself...