ISBN-13: 9781405276184 / Angielski / Miękka / 2016 / 352 str.
Features Sophie and Lil, who don cunning disguises, mingle in high society and munch many cucumber sandwiches to solve this curious case! This book lets you 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...