Someone has stolen Mr Vanderpuff's golden whisk!
If Bridget and her new friend Stacy don't find it by midnight, the world's best baker will never mix again.
And - as the girls chase a chain of impossible puzzles through the secrets and shadows of Paris - Tom and Pascal find skulduggery afoot in Belle-on-Sea...
Can Bridget and her friends crack the case and save the bake shop in time?