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Démence (Outsphere, #5) was the most recently released book by Guy-Roger Duvert, on July 12th, 2026.
Guy-Roger Duvert Stats: The most read book by Guy-Roger Duvert on Book Notification is Backup, a Standalone novel. The second most read book is Outsphere (Outsphere #1).
Below is a complete list of Guy-Roger Duvert books in publication and chronological order, broken down by series.
Ranked by popularity, the top Les Chroniques Occultes books are Nid d'Espions à Canton, L'Appel d'Am-Heh, and Les Disparus d'Arkham.
Ranked by popularity, the top Outsphere books are Outsphere, Ordres et Chaos, and Le Réveil.
Guy-Roger Duvert is the author of the Outsphere series which currently consists of 5 novels. The Outsphere series started in 2019 with the novel Outsphere. The most recently released novel in the Outsphere series was Démence which was released in 2026. There are no upcoming novels for the Outsphere series.
Guy-Roger Duvert has also written the Les Chroniques Occultes series which has 5 books including L'Appel d'Am-Heh and Les Disparus d'Arkham.
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Home » Authors » Guy-Roger Duvert List of Books
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