After their mother falls mysteriously ill, eleven-year-old twins Gus and Leo and their mute younger sister, Ila, learn that they share their mother's ability to transform into animals, and to defeat the evil King of the Black Lakes, they must harness this newfound power.
- ISBN10 030793148X
- ISBN13 9780307931481
- Publish Date 12 May 2015 (first published 1 January 2014)
- Publish Status Remaindered
- Imprint Yearling Books
- Format Paperback (US Trade)
- Pages 288
- Language English