Susan Rodriguez was Harry Dresden's sweetheart for a long time—until she was attacked by his adversaries, leaving her divided between her humanity and the bloodlust of the vampiric Red Court. Susan then fled to South America to fight both her nasty gift and those who cursed her with it.
Arianna Ortega, Duchess of the Red Court, has unearthed a long-kept secret maintained by Susan and intends to use it against Harry. He may have no choice but to embrace the burning rage of his own latent dark power if he is to win this time. Because Harry isn't out to save the world...
He is fighting for his child's life.