Le Fantôme de l'Opéra (English: The Phantom of the Opera) is a novel by French writer Gaston Leroux. It was first published as a serialisation in "Le Gaulois" from September 23, 1909 to January 8, 1910. Initially, the story sold very poorly upon publication in book form and was even out of print several times during the twentieth century. You might be looking for the musical by Andrew Lloyd Webber.