Each book in this series explores a different aspect of the unexplained, tracing both past and present evidence and outlining the theories that seek to make sense of the unknown.'
- ISBN10 0836862651
- ISBN13 9780836862652
- Publish Date 30 December 2005 (first published November 1999)
- Publish Status Out of Print
- Out of Print 4 July 2022
- Publish Country US
- Imprint Gareth Stevens Publishing
- Format Hardcover (Library Binding)
- Pages 36
- Language English