Kathryn Steele has been at Camp Half-Blood for over ten years, and she loves it. Ten years of good memories, training, and routine are shattered when a new demigod comes to Camp, the funny and slightly annoying William Adams. Soon after he arrives, strange things begin to happen. Kathryn finds herself thrown into a whirlwind of danger, adventure, and excitement.

Kathryn Herondale is the best Shadowhunter on Earth after only her father, Jace Herondale. Her life revolves around killing demons and rouge Downworlders, but one night on a routine hunt she is attacked by a werewolf. When Kathryn is Turned, everything changes.