Gaston Leroux is a classic detective and mystical novel, the author of one of the most famous French works of all time, “The Phantom of the Opera.” For more than a century, films and TV series have been made based on his books, plays and musicals have been staged. This edition includes two novels by Leroux about the adventures of reporter Joseph Rouletabille: “The Mystery of the Yellow Room” and “The Perfume of the Lady in Black.” “The Mystery of the Yellow Room” is perhaps the most famous detective novel about a crime in a hermetically sealed space. In a castle near Paris, an “impossible” crime was committed - a murder in a locked room. The police are at a dead end, wondering what the criminal's motives are and how he was able to get into a room locked from the inside and then escape unnoticed. However, the young reporter Joseph Rouletabille is convinced that there are no unsolvable mysteries... In the novel “The Perfume of the Lady in Black,” which is a continuation of “The Secret of the Yellow Room,” Joseph Rouletabille enters into a duel with a sophisticated criminal who masterfully changes his appearance.