#1 New York Times and #1 Wall Street Journal bestselling author Brad Thor is back with his most gripping thriller yet!

In ancient texts, there are stories about men who struck from the shadows, seemingly beyond the reach of death itself. These men were considered part angel, part demon. Their loyalty was to their families, their friends, and their kings. You crossed these men at your peril. And once crossed, there was no crossing back.

They were fearless; men of honor who have been known throughout history by different names: Spartan, Viking, Samurai.

Today, men like these still strike from the shadows. They are highly prized intelligence agents, military operatives, and assassins.

One man is all three.

Two days ago, that man was crossed--badly. Now, far from home and surrounded by his enemy, Scot Harvath must battle his way out.

In the most explosive novel Brad Thor has ever written, page after captivating page of action, intrigue, loyalty, and betrayal will keep you hooked until the very last sentence.