Meet Piotr, Minnie, Andrew, Flora and Sylvie - true friends and even better mystery-solvers!

Flora and Sylvie are going on the holiday of a lifetime with their dad. But - WHAT? - Dad cancels the trip only hours before the flight because - OH MY GOODNESS - someone has stolen precious blueprints of Dad's latest invention: an amazing new scooter. But who? And why? Time to call on the only five people who can possibly solve the crime!

The third in a fantastic new series filled with friendship, adventure and mystery!

Perfect for fans of the Laura Marlin Mysteries by Lauren St John, this is THE new mystery adventure series by Waterstones Book Prize shortlisted author Elen Caldecott.

Elen Caldecott graduated with an MA in Writing for Young People from Bath Spa University and was highly commended in the PFD Prize for Most Promising Writer for Young People. Before becoming a writer, she was an archaeologist, a nurse, a theatre usher and a museum security guard. It was while working at the museum that Elen realised there is a way to steal anything if you think about it hard enough. Elen either had to become a master thief, or create some characters to do it for her - and so her debut novel, How Kirsty Jenkins Stole the Elephant, was born. Kirsty Jenkins was shortlisted for the Waterstone's Children's Prize and longlisted for the 2010 Carnegie Award. Kirsty Jenkins was followed by How Ali Ferguson Saved Houdini. Operation Eiffel Tower is Elen's third novel for Bloomsbury. Elen lives in Bristol with her husband, Simon, and their dog. www.awfullybigblogadventure.blogspot.com