In 1909, already a well-known figure in literary circles, Souvestre collaborated with his assistant Allain on their first novel, Le Rour. Investigating Magistrate Germain Fuselier, later to become a recurring character in the Fantômas series, appears in the novel.
Then, in February 1911, Allain and Souvestre embarked upon the Fantômasbook series at the request of publisher Arthème Fayard, who wanted to create a new monthly pulp magazine. The success was immediate and lasting.
Souvestre died of a congestion of the lungs. After his death, Allain continued the Fantômas saga alone.
Bibliography of books by Souvestre and Allain