LARGE PRINT EDITION. Reporter and amateur detective Joseph Rouletabille is called to the Château du Glandier. A young heiress has been found beaten within an inch of her life in a room locked from the inside. When Frédéric Larsan, France’s top detective, unexpectedly solves the case, Rouletabaille grows suspicious. The Mystery of the Yellow Room is a novel by Gaston Leroux.