Le Mystère des XV

Lore & Background

The novel follows Léo Sainte-Claire, the Nyctalope, as he investigates the abduction of his fiancée Xavière de Ciserat by a secret organization called the XV. The XV plans to transport fifteen young women to Mars to aid in conquering the planet. Sainte-Claire pursues the organization from Paris to the Congo and then to Mars, where he confronts both the XV and the Martians. The story includes elements such as radioplanes, a secret base in the Congo, and a suicide attack by an XV agent.

Reader's Guide

Le Mystère des XV is significant as a pioneering work in French science fiction, blending adventure with early superhero tropes. The Nyctalope's ability to see in the dark (nyctalopia) marks him as one of the earliest superheroes in popular literature. The novel also innovates by portraying humans colonizing Mars, a departure from earlier Martian invasion narratives like H. G. Wells's The War of the Worlds. Despite delayed French reissues, the novel was translated into other languages in the first half of the 20th century, indicating its international reach. The work's structure—four parts separated by interludes—and its detailed plot involving betrayal, romance, and military conquest reflect the scientific romance tradition of its era.

Did You Know?

• The novel was first serialized in 1911 in the newspaper Le Matin.
• It is an early French novel to depict the colonization of Mars by Earth inhabitants, though it was predated by Gustave Le Rouge's 'La Conquête de Mars' (1908).
• The protagonist Léo Sainte-Claire is one of the earliest examples of a superhero in popular literature due to his nyctalopia.
• The novel includes references to H. G. Wells's The War of the Worlds.