Couples, Siblings, Cousins, and Parabatai

Erin Herondale has grown up in London and Brisbane, away from the only family she has left - her older brother Jace. Her parents, scared to have their daughter raised by Valentine like Jace was, gave her to the Clave to look after. She was sent to London with the Greystone family until she was eleven, when she was sent to the Brisbane Institute run by the Heartson family.

But Erin's fifteen now, and she's in New York, ready for the new chapter in her life. But what she doesn't know is that she'll finally meet her brother. The arrival of Erin Grace Herondale in New York is just the beginning of the Institute made of couples, siblings, cousins, and parabatai.