To stay alive and return home, Rebecca and her friends must strike the Master of Shadows at the source of his powers, a crumbling castle fiercely guarded by the Shadow Spies.
- ISBN10 1467715174
- ISBN13 9781467715171
- Publish Date 1 August 2013
- Publish Status Active
- Publish Country US
- Publisher Lerner Publishing Group
- Imprint Graphic Universe
- Format Paperback (US Trade)
- Pages 56
- Language English