It's another tricky case for the famous dog detective and his trusty sidekick, Dr Whatsup Wombat. Professor Greymatter's been kidnapped, together with his top-secret brainwashing invention, and the only clue is a set of mysterious footprints left in wet cement. Could this be the work of the furry fiend, Professor Ha-Ha Hyena-criminal mastermind and Sherlock Hound's arch enemy...?
- ISBN10 0439981328
- ISBN13 9780439981323
- Publish Date 18 October 2002
- Publish Status Out of Print
- Out of Print 26 February 2010
- Publish Country GB
- Publisher Scholastic
- Imprint Scholastic Young Hippo
- Format Paperback
- Pages 48
- Language English