Sponsored by Quantum by bestselling author Patricia Cornwell.
The risks are sky high—the stakes are higher. On the eve of a top-secret space mission, Captain Calli Chase detects a tripped alarm in the tunnels deep below a NASA research center. A series of disturbing clues point to Calli’s twin sister, Carme, who’s been MIA for days. Now, Captain Chase must find her sister to uncover the truth. As time runs out, she realizes that failure will mean absolute catastrophe. The first thriller in an electrifying new series by international bestselling author Patricia Cornwell, is action-packed all the way to the end. Quantum is now available.