Since Merit was turned into a vampire and the protector of Chicago's Cadogan House, it's been a wild ride. She and Master vampire Ethan Sullivan have helped make Cadogan's vampires the strongest in North America, and forged ties with paranormal folk of all breeds and creeds, living or dead . . . or both. But now those alliances are about to be tested. A strange and twisted magic has ripped through the North American Central Pack, and Merit's closest friends are caught in the crosshairs. Gabriel Keene, the Pack Apex, looks to Merit and Ethan for help. But who-or what-could possibly be powerful enough to out-magic a shifter? Merit is about to go toe to toe, and cold steel to cold heart, to find out.