Harry Dresden is ALIVE! After being killed by a mysterious enemy, fighting his way through the realm between life and death, and returning back to the mortal world, Harry realized that maybe death wasn't so bad after all. Therefore, now he is no longer Harry Dresden - the only professional sorcerer in Chicago. He is now Harry Dresden - the Winter Knight of Mab, Queen of Air and Darkness. After Harry was left with no choice but to pledge his allegiance, Mab wasn't about to let something as insignificant as death steal the prize she'd strived to obtain for so long. And her every word became an order for him - no matter what she demanded to do, no matter where she ordered him to go, no matter who she ordered him to kill. Guess who Mab will order first? Of course, this will not be an ordinary, everyday murder. Mab wants her new minion to do the impossible: kill an immortal. Not a bad task, huh? And to make matters worse, there is a growing threat from an unfathomable source of magic that could create problems for Harry that would make death seem like a holiday. Surrounded by enemies old and new, Harry must rally his friends and allies, prevent the destruction of countless innocent people, and find a way out of his eternal slavery before his newfound powers deprive him of the only thing he can still call his own... His soul.