Confronted by the first murder suspect of his early career while visiting his hometown, FBI detective Amos Decker reexamines startling connections to another crime that make him question if he arrested the wrong man years earlier.

When Amos Decker and his FBI colleague Alex Jamison are called to London, North Dakota, they instantly sense that the thriving fracking town is ripe for trouble. The promise of a second gold rush has attracted an onslaught of newcomers all hoping for a windfall, and the community is growing faster than houses can be built. The sudden boom has also brought a slew of problems with it, including drugs, property crimes, prostitution--and now murder. Decker...