Brent Weeks

"After the war that cost him so much, Kylar Stern is broken and alone. He's determined not to kill again, but an impending amnesty will pardon the one murderer he can't let walk free. He promises himself this is the last time. One last hit to tie up the loose ends of his old, lost life. But Kylar's best, and maybe only, friend, the High King Logan Gyre, needs him. To protect a fragile peace, Logan's new kingdom, and the king's twin sons, he needs...