After Mason crosses over into the realm of the Norse gods, Fenn descends into the underworld and races against fate to find Mason and bring her home before she can be transformed into a Valkyrie, which would set the end of the world in motion.
- ISBN10 0062063103
- ISBN13 9780062063106
- Publish Date 27 August 2013
- Publish Status Active
- Publish Country US
- Publisher HarperCollins Publishers
- Imprint Collins
- Format Hardcover
- Pages 336
- Language English