"When Evan suddenly finds himself at odds with his oldest friend, all the rules he lives by shatter—and the consequences are murderous. Tommy Stojack might be Evan's best friend in the world. He’s a gifted gunsmith who has created much of Evan's own weapons and combat gear. But now, he has apparently crossed one of Evan's hardest lines and their argument explodes into open warfare. Now Evan has no choice but to track and face down his only friend."