Tucked away in the mountains of North Carolina lies a remnant of one of the greatest scientific achievements of the 20th century–putting a man on the moon. This isolated site exists today as the Pisgah Astronomical Research Institute.

But past and present collide when skeletal remains are unearthed on the complex, and DNA testing confirms the identity of a scientist who disappeared during the Apollo 15 mission. The niece of the murdered man implores Asheville detectives Sam Blackman and Nakayla Robertson to take the case.

As Sam and Nakayla dig into the events of the past, they discover the trail leads to a murder in Asheville’s Rat Alley, proving that a killer from the past still stalks the present. And Sam and Nakayla now top the assassin’s list.