When a rare coin and a strange code are uncovered in McKenna School, Malcolm and the other classroom pets of the Midnight Academy take on their most challenging assignment yet and, through their investigations, they just might save the school from closing.
- ISBN10 054481312X
- ISBN13 9780544813120
- Publish Date 13 September 2016 (first published 4 August 2015)
- Publish Status Out of Stock
- Publish Country US
- Imprint Clarion Books
- Format Paperback (US Trade)
- Pages 272
- Language English