Master Assassins

Kandri Hinjuman was never meant to be a soldier. His brother Mektu was never meant for this world. Rivals since childhood, they are drafted into a horrific war led by a madwoman-Prophet, and survive each day only by hiding their disbelief. Kandri is good at blending in, but Mektu is hopeless: impulsive, erratic-and certain that a demon is stalking him. Is this madness or a second sense? Either way, Kandri knows that Mektu's antics will land them both in early graves.
But all bets are off when the brothers' simmering feud explodes into violence, and holy blood is spilled. Kandri and Mektu are taken for contract killers and must flee for their lives-to the one place where they can hope to disappear: the sprawling desert known as the Land that Eats Men. In this eerie wilderness, the terrain is as deadly as the monsters, ghouls, and traffickers in human flesh. Here the brothers find strange allies: an aging warlord, a desert nomad searching for her family, a lethal child-soldier still in her teens. They also find themselves in possession of a secret that could bring peace to the continent of Urrath. Or unthinkable carnage.
On their heels are the Prophet's death squads. Ahead lie warring armies, sandstorms, evil spirits and the deeper evil of human greed. But hope beckons as well-if the "Master Assassins" can expose the lie that has made them the world's most wanted men.

Robert V.S. Redick