The royal family are disturbed by the shocking news that there has been a break-in at the Tower of London - everything has been stolen, including the crown jewels.
The adults say it's a human matter, but Lupo has an especially bad feeling about this particular crime.
He and Kitty take matters into their own hands. Meanwhile, something is stirring in the Thames - a creature who has been hiding in the sewers for hundreds of years.
A creature with revenge on its mind ...
- Format: Paperback
- Pages: 240 pages
- Publisher: Hachette Children's Group
- Publication Date: 14/01/2016
- Category: Adventure
- ISBN: 9781444921557