Ever since Merit was turned into a vampire and became the protector of Chicago's House Cadogan, her life has not been easy. She and Vampire Master Ethan Sullivan helped make Cadogan's vampires the strongest in North America, forging bonds with paranormal creatures of all breeds and creeds, living and dead... But now these alliances will be tested. Strange and twisted magic has broken through the North American Central Pack, and Merit's close friends are caught in the crosshairs. Gabriel Keene, Apex of the Pack, turns to Merit and Ethan for help. But who - or what - was powerful enough to defeat the werewolves' magic?