Billie and the Secret Mystery Club are investigating their most serious mystery yet. Someone has taken something from the principal's office at school! Who would have done such a terrible thing? And when one of Billie's friends becomes a suspect, will Billie even know who to trust anymore?
| ISBN: | 9781743582398 |
| Publication date: | 1st July 2014 |
| Author: | Rippin, Sally |
| Publisher: | Hardie Grant Children's Publishing |
| Format: | Ebook |