There are two stories/TV episodes in each book so they are 'flipper' books, with a front cover for each story. THE CASE OF THE GOBBLING GOOP An eccentric professor disappears - with a secret formula! THE CASE OF THE SURFER DUDE WHO'S TRULY RUDE Surfboard sabotage in Malibu!
- ISBN10 0340981164
- ISBN13 9780340981160
- Publish Date 5 February 2009
- Publish Status Out of Print
- Out of Print 17 December 2014
- Publish Country GB
- Publisher Hachette Children's Group
- Imprint Hodder Children's Books
- Format Paperback (B-Format (198x129 mm))
- Pages 144
- Language English