The biggest, most beautiful diamond in the whole world has been stolen from Buckingham Palace!
Nobody knows how a sneaky thief managed to take the Siberian Diamond from right under the Queen’s nose – but Shylo and the brave Royal Rabbits of London will do whatever it takes to solve the case and return the jewel to its rightful place.
Then they discover that Russia’s secret-agent minks are in London, could they have something to do with the theft? But nothing is quite what it seems, and the Royal Rabbits soon realise they are going to need help from an old friend to solve this mystery…