Book 4 in the New York Times bestselling series - perfect for curious readers! 'This book reminded me of some of the children’s books I grew up with, like Charlie and the Chocolate Factory and The Phantom Tollbooth.' RICK RIORDAN, author of the PERCY JACKSON series on book 1 'Like the Potter books, this story goes beyond mere adventure' BOOKLIST on book 1After starring in three adventures, the inimitable quartet of Reynie, Sticky, Kate, and Constance haven't had a mission together in some time. But with the arrival of a new Society member – and a new threat – they must reunite to face dilemmas more dangerous than ever before. Including the return of the villainous Mr Curtain and his Ten Men, and a formidable enemy with a mystifying ability to track their every move ...  Book 4 in the New York Times bestselling adventure series – ideal for children aged 10 and up Join a group of smart and resourceful junior sleuths as they solve a series of page-turning puzzles and mysteries Perfect for fans of Robin Stevens's MURDER MOST UNLADYLIKE series Want to know how it all began? Check out the prequel to the series, THE EXTRAORDINARY EDUCATION OF NICHOLAS BENEDICT