"In order to be come one of Odin Alfather's Valkyrie, Signy Valborn must solve a riddle. With the help of Ned the Spiritless and Soren Bearstar, Signy embarks on a journey in search of her destiny"--
- ISBN10 0307977536
- ISBN13 9780307977533
- Publish Date 10 June 2014 (first published 1 January 2014)
- Publish Status Active
- Imprint Random House Books for Young Readers
- Format eBook
- Language English