As the last heiress of the House of North, Alissa knows that striking up a secret friendship with a half-vampire enforcer is dangerous, but Merrick is a temptation she can’t resist. But after Alissa is kidnapped, Merrick proves that he will do anything to protect the woman who tempts him with her very existence.

When she discovers that a would-be creator is determined to make his (or her) own demons and needs her blood, former witch-turned-day-walking-demon Rachel Morgan, a bounty hunter, faces her toughest adversary yet --humanity.

A tale set in an alternate-universe, post-World War II era finds precarious peace agreements between England and the USSR threatened by the murders of warlocks responsible for safeguarding British national security, a situation that falls into the hands of two supernaturally enhanced siblings and a former spy who would protect the queen.