Discovering buried evidence makes her a target.

At a prehistoric site, forensic anthropologist Taya McGill uncovers a recently buried body days before Christmas — and finds herself in a killer’s sights. Now on the run with undercover ATF agent Keegan Stryker, she must rely on him to guard her as they figure out why someone would kill to keep this murder unsolved. But can they unearth the truth before someone silences them both for good?