Owen, Dana, Jon, and Sydney must find a crystal rune before Norse trickster Loki uses its power to destroy their world.
- ISBN10 060626759X
- ISBN13 9780606267595
- Publish Date 1 December 2012
- Publish Status Out of Print
- Out of Print 6 April 2021
- Imprint Turtleback Books
- Edition Bound for Schools & Libraries ed.
- Format Hardcover (Library Binding)
- Pages 112
- Language English