Sabotage at sea.
Sherlock Holmes dead.
Queen Victoria's grand-daughter kidnapped.

The national chaos that ensues can only add up to one man: the evil Professor Moriarty.
Can the Irregulars foil the evil Professor's diabolic schemes in time?

This book is part of a book series called Baker Street Mysteries .

There are 352 pages in this book. This book was published 2009 by Hachette Children's Group .

Chris Mould is an established illustrator and has sold internationally. He is married with two children and lives in Yorkshire.