Summer's last breath meets autumn's first kill in Greenville, Maine.

On a moonless stretch of backcountry road, Detective Brock Justice stares down at a crime scene that refuses to play by the rules. A woman lies dead, the apparent victim of a lethal roadside crash—until a stab wound is found hidden beneath her clothing. Two causes of death. Zero easy answers.

Reunited with his partner, Detective Chloe Wright, Justice begins pulling at threads that too many people want left alone. The victim had secrets—the kind worth killing for. And each suspect carries enough baggage to sink a body in Moosehead Lake. An ex-boyfriend with a violent past. A married fitness trainer with too much to lose. A combat veteran living off the grid, haunted by ghosts of his own.

As golden leaves turn blood-red against pewter skies, Justice is fighting more than just a killer. The fallout from testifying against a fellow trooper clings to him like a bad debt, and someone inside the department is making sure he pays for it.

Then a game warden's trail camera captures something deep in the woods. But it isn't just a clue—it's a warning.

Fans of Craig Johnson's Longmire and C.J. Box's Joe Pickett will find themselves right at home in this dark corner of Maine.