Zero Hour for Zenobia, by Annette Kelleher

When Aunt Erica goes on holiday, Zenobia stays home. But when she gets a strange letter from Aunt Erica, Zenobia starts to worry. Why would her aunt want Zenobia to post her expensive jewellery to a post-office box? And why is the postcard postmarked in Sydney, when her aunt is supposed to be in Melbourne?

Although she doesn’t know what is going on, Zenobia’s instincts are that it’s not something good. She is going to Sydney to find her aunt and figure out what’s going on.

Zero Hour for Zenobia is a fun mystery, full of comic characters and action. It will appeal particularly to girls aged 10-13.

Fun.

Zero Hour for Zenobia, by Annette Kelleher
Scholastic, 2003