Leroux was an early 20^th century writer, detective and journalist. He is best known for writing The Phantom of the Opera. This mystery is one of the first "locked room mysteries". A locked room mystery is one in which a crime is committed in what seems to be impossible circumstances. In this instance the criminal disappears from a locked room. Это и многое другое вы найдете в книге The Mystery of the Yellow Room (LeRoux Gaston LeRoux)