The sirens called the surviving Watchers home.
They were not the only ones listening.
For fifteen years, Hanford survived by remaining silent: its reactors guarded, its secrets buried, and its people hidden beneath the Burning Ground.
Now the silence is over.
Watcher stations have gone dark. Classified records are missing. Refugees are being driven toward the basin. Beyond the eastern ridges, a disciplined army is gathering under a commander who knows Hanford's procedures, its defenses, and the doctrine that kept it alive.
He was once one of them.
As winter begins to break, Graham must prepare his people for an enemy who knows how their protectors think-and where their loyalties can be turned against them. The men guarding Hanford have spent years deciding who can be saved. Now those decisions are coming back to threaten everyone behind its walls.
With families depending on him and an army drawing closer, Graham must decide whom to trust, what to defend, and what he refuses to sacrifice.
The Gathering Dark is Book Twelve in Graham's Resolution by USA Today bestselling author A. R. Shaw-a post-apocalyptic survival thriller about family, loyalty, and the cost of standing watch.