The honour of your company is requested at lord beaucastle's fancy dress ball. Wonder at the puzzling disappearance of the Jewelled Moth! Marvel as our heroines, Sophie and Lil, don cunning disguises, mingle in high society and munch many cucumber sandwiches to solve this curious case! Applaud their bravery as they follow a trail of terrible secrets that leads straight to London's most dangerous criminal mastermind, and could put their own lives at risk...It will be the most thrilling event of the season! This is a fast-paced and compelling mystery adventure with gorgeous Edwardian period detail, this is Mr Selfridge meets Nancy Drew!