Gaston Louis Alfred Leroux (6 May 1868 - 15 April 1927) was a French journalist and author of detective fiction.
In the English-speaking world, he is best known for writing the novel The Phantom of the Opera (Le Fantôme de l'Opéra, 1911), which has been made into several film and stage productions of the same name, notably the 1925 film starring Lon Chaney; and Andrew Lloyd Webber's 1986 musical.
Gaston Louis Alfred Leroux was born in Paris in 1868. He went to school in Normandy and studied law in Paris, graduating in 1889. He inherited millions of francs and lived wildly until he nearly reached bankruptcy. Subsequently in 1890, he began working as a court reporter and theater critic for L'Écho de Paris. His most important journalism came when he began working as an international correspondent for the Paris newspaper Le Matin. In 1905, he was present at, and covered, the Russian Revolution.
Another case he was present at involved the investigation and in-depth coverage of the former Paris Opera (presently housing the Paris Ballet). The basement contained a cell that held prisoners of the Paris Commune.