Nolan Garrett is at war...with his own ordnance His cutting-edge combat suit: hacked.His high-tech weaponry: dismantled.His AI: inoperative.All he has left are his wits and the help of the drugged-out Silverguard he rescued from her addiction.His enemy is one he can't see, can't stab, can't shoot. Hidden behind the technology that made Nolan the Nyzarian Empire's deadliest assassin, the mysterious hacker known only as Ex-Umbra is a threat his...