Gaston Leroux books in order
7 books in the catalogue, about 36 hours of reading in all; the shortest takes 4 hours and the longest 7 hours.
1 series and 3 standalone books in the catalogue.
Les aventures de Rouletabille
7 books 1 
The Mystery of the Yellow Room 4.5 h 
Les Étranges Noces de Rouletabille 4.9 h 6 Rouletabille at Krupp's 4.2 h 7 
The Crime of Rouletabille 3.7 h
The Mystery of the Yellow Room 4.5 h 3 The Secret of the Night length not known
4 Le Château noir length not known
5 Les Étranges Noces de Rouletabille 4.9 h 6 Rouletabille at Krupp's 4.2 h 7 The Crime of Rouletabille 3.7 h 8 Rouletabille and the Gypsies length not known
