Mysterious Benedict Society and the Prisoner's Dilemma (2020 reissue), Paperback/Trenton Lee Stewart

Reynie, Kate, Sticky and Constance are back - but so is Mr Curtain, with another devious scheme! Can the Mysterious Benedict Society thwart Mr Curtain's plans, even whilst held prisoner? Join them on their adventure as they face all sorts of dilemmas, in a bid to save Stonetown. The third book in the New York Times bestselling series!