On one side, the Night World, ruled by the Blood Lords and the Beast Kind. On the other, the elusive Fae and the humans, protected by their steadfast mages. Born a wraith, Lily is a shadow who slips between worlds. Brought up by a Blood Lord and raised to be his assassin, she is little more than a slave. But when Lily meets her match in target Simon DuCaine, the unlikely bond that develops between them threatens to disrupt an already stretched peace in a city on the verge of being torn apart.