Leon Groc (undoubtedly Leon Joseph Paul Groc of its true name) is a writer of French language, born on April 7th, 1882 with La Rochelle and deceased on June 18th, 1956 with Nice.

Journalist of profession, he is the author of many detective novels and science fiction.

Pseudonyms

• L. - M. Groc
• J. - P. Mongis

Bibbliography

• the bus disappeared , 1914
• the mystery of the studio 39 , the Lynx N°16, 1940
• the villa of the nightmare , the Lynx N°21, 1941
• assassinated telephone , the Lynx N°25, 1941
• the cursed place , the Lynx N°29, 1941
• the city of darkness , Great adventures N°29, 1952
• the crystal planet, Marabout Science fiction N°581