"Some believed that Elisa Sullivan, as the only vampire child ever born, had all the luck. But the magic that helped bring her into the world left her with a dark secret. Shifter Connor Keene, the lone son of North American Central Pack Apex Gabriel Keene, is the only one she trusts with it. But she's a vampire and the daughter of a Master and a Sentinel, and he's prince of the Pack and its future king.... When the assassination of a diplomat brings old feuds to the fore again, Elisa and Connor must choose between love and family, and between honor and obligation, before Chicago disappears forever"-- Provided by publisher.