You can't keep a good wizard down, even if he wants to be.
For years, Harry Dresden was Chicago's sole professional wizard, but a desperate pact with the Queen of Air and Darkness has forced him to take on a new role: professional killer.
Mab, the mother of evil faeries, has resurrected the mostly-dead wizard and sends him on his first mission: to kill an immortal. Even as he struggles to complete the impossible task, Dresden becomes aware of a looming threat to Demonreach, the living island hidden in Lake Michigan, whose true purpose and dark potential have the potential to destroy billions and land Dresden in the deepest trouble he has ever known—even deeper than death.
Dresden has only twenty-four hours to reunite with his former comrades, prevent a calamity, and achieve the impossible—all while the power he bought for but never intended to keep lays siege to his very soul.
Magic. It has the potential to kill a man.