In a town built on healing waters, the dead are piling up-and someone is making murder look like medicine.
Deputy U.S. Marshal Coble Bray is already questioning how much killing a man can survive when a routine shooting in Lamar is followed by a suspicious hanging in nearby Jerico Springs. The sheriff calls it suicide. Coble knows better. As he digs deeper, he finds a wealthy land developer willing to do anything to seize the valuable springs beneath a stubborn farmer's land.
While Coble hunts a killer, Mattie Hurst uncovers another mystery inside the town's celebrated bathhouse. Elderly women are dying after mineral-water treatments, and someone is using the promise of healing to conceal something far more deadly.
As their investigations collide, Coble and Mattie discover a conspiracy driven by greed, corruption, and murder. With powerful men closing ranks and hired guns waiting to silence them, they'll have to risk everything to expose the truth.
Can Coble uncover the truth before Jerico Springs buries it forever, or will envy prove to be the deadliest sin of all?