Mr. Oldcastle and Gumdrop are off for a quiet day in the country, investigating some rather mysterious crop circles. Their quiet day turns to absolute mayhem with the arrival of some fellow vintage car enthusiasts from the planet Mars!
| ISBN: | 9780340714867 |
| Publication date: | 11th November 1998 |
| Author: | Val Biro |
| Publisher: | Hodder Children's Books an imprint of Hachette Children's Group |
| Format: | Paperback |
| Pagination: | 32 pages |
| Genres: |
Children’s: picture books, activity books, early learning concepts |