After saving a piskie's life, twelve-year-old Emily Snow finds herself in the middle of a centuries-old war between rival fairy factions and a secret society named The Invisible Order.
- ISBN10 1606842250
- ISBN13 9781606842256
- Publish Date 13 September 2011 (first published 1 January 2010)
- Publish Status Active
- Publish Country US
- Imprint Egmontusa
- Format Paperback (US Trade)
- Pages 368
- Language English