Sally Lockhart's friend and partner-in-adventure Jim Taylor has just solved a mystery. For years he's been searching for Adelaide, the little girl enslaved by toothless crone Mrs Holland in The Ruby in the Smoke. And now he's found her – just as she's about to become a princess. Crown Princess of Razkavia, to be exact, and a princess in danger. Her future husband is desperate to protect his bride, and employs Jim as their bodyguard – Razkavia's quaint little streets are full of danger.

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