After Lady Truthful's magical Newington Emerald is stolen from her she devises a simple plan: go to London to recover the missing jewel. She quickly learns, however, that a woman cannot wander the city streets alone without damaging her reputation, and she disguises herself as a mustache-wearing man. During Truthful's dangerous journey she discovers a crook, an unsuspecting ally, and an evil sorceress. But will she find the Emerald?
London (England) -- History -- 19th century -- Fiction.
Magic -- Fiction.
Sex role -- Fiction.
Young adult fiction.