"Le mystere de la chambre jaune" ("The Mystery of the Yellow Room") is one of the most famous "locked room mysteries," where a crime is committed in apparently impossible situations. In this classic French detective novel written in 1907 by Gaston Leroux (1868-1927), best known for his thriller "The Phantom of the Opera" (1911), a young journalist Joseph Rouletabille (only 18 years old) volunteers to solve the most puzzling case of an attempted murder committed in "The Yellow Room," in which Mademoiselle Stangerson, a beautiful daughter of a famous scientist is found seriously injured. No one was discovered in the locked room. No one was seen escaping from there. So what really happened?