Title: The case of the stolen sparklers
Description: Lady Mountjoy's famous diamonds are missing and Polly, a young servant girl, has been accused of the theft. When Polly turns to the Baker Street Boys for help, Wiggins promises to find the missing jewels and clear her name. But the young detectives soon realize there's more to the inhabitants of Mountjoy House than meets the eye. Could this be their toughest mystery yet?
Subjects: Baker Street Boys (Fictitious characters), Juvenile fiction