L’affaire Lerouge¹ (1866)
The Widow Lerouge [1873]
APA: The Lerouge Case [1881] [review]
APA: The Lerouge Affair [1908]

Le crime d’Orcival² (1867)
The Mystery of Orcival [1871]
APA: Crime at Orcival [1952]

Le dossier no. 113² (1867)
File No. 113 [1883]
APA: Dossier No. 113 [1883]
APA: Warrant No. 113: or The Mystery of the Steel Safe [1884] [highly abridged]
APA: The Blackmailers [1907] [abridged]

Les esclaves de Paris (1868) [2 vols]
The Slaves of Paris [1882]
APA: Caught in the Net [1891] [pt. 1]
APA: The Champdoce Mystery [1891] [pt. 2]

Monsieur Lecoq (1869) [2 vols]
Monsieur Lecoq [1880, 1900, 1975]
APA: Lecoq the Detective [1881]
APA: Monsieur Lecoq: The Detective’s Dilemma [1888] [pt. 1]
APA: Monsieur Lecoq: The Detective’s Triumph [1888] [pt. 2]
APA: The Honor of the Name [1900] [pt. 2]

La vie infernale (1870) [2 vols.]
The Count’s Secret [1880]
APA: The Count’s Millions [1884]
APA: Baron Trigault [1905] [pt. 2]
APA: The Count’s Millions [1913] [pt. 1]
APA: The Vengeance of Baron Trigault [1913] [pt. 2]
APA: Baron Trigault’s Vengeance [1913] [pt. 2]

La clique dorée (1871)
The Clique of Gold [1874]
APA: The Gilded Clique [1883]

La dégringolade (1872)
The Catastrophe [1873]
APA: The Downward Path [1880]

La corde au cou (1873)
Within an Inch of His Life [1874]
APA: In Peril of His Life [1881]
APA: In Deadly Peril [1888]

L’argent des autres (1874)
Other People’s Money [1875]

Le petit vieux des batignolles (1876) [novella & SS]
The Little Old Man of the Batignolles: A Chapter from a Detective’s Memoirs [1880]
APA: Max’s Marriage, or, The Viscount’s Choice³ [1880]
APA: A Beautiful Scourge [1883]
APA: The Little Old Man of Batignolles and Other Stories [1884]
APA: A Thousand Francs Reward³ [1887]

Les amours d’une empoisonneuse (1881)
The Intrigues of a Poisoner [1885]
APA: The Marquise de Brinvilliers [1886]
APA: Marie de Brinvilliers [1888]
APA: An Adventuress of France [1921]