Where Trackers fear to tread.

Time is running out for Amos Morgan, Aubrey Carter, and their team of Runners. Their troubled alliance with a cadre of renegade Hoarders — key to gaining access into the Enclave — teeters on a razor's edge. Years of suspicion and prejudice, on both sides, wars against their need to present a united front.

The Dissidents, Mateo and Megan, may be the key, but can anyone be sure whose side they're on?

The situation inside the Enclave is deteriorating, manipulated behind the scenes by the shadowy Givers and their power-hungry Hoarder accomplices. In a matter of days — or less — the Givers will unleash an army of Trackers.

Earth's fate hangs in the balance. The Runners are left with one last, desperate option ... dance with the Scorpion.