L'Île Noire
"The Black Island" was first serialised in "Le Petit Vingtième" from 15 April to 16 November 1937 under the title "Le Mystère De L'Avion Gris" ("The Mystery of the Grey Plane"). From 17 April 1938, the story was also serialised in the French Catholic newspaper, "Cœurs Vaillants".