The mystery of New Year's Eve (novella) 1890, (Translated also as The Case of the Pocket Diary Found in the Snow)
The golden bullet (novella) 1892 (Translated also as The Case of the Golden Bullet)
Who is it? (Short story) 1894
How I Was Murdered (Novella) 1895 (Translated also as The Case of the Registered Letter)
The confessional secret (novella) 1897
The old gentleman (novella) 1898
Why she extinguished the light (novel) 1899 (Translated also as The Case of the Lamp That Went Out)
The pharaoh's bracelet (novel) 1900
The house in the shadow (novella) 1902
The blue lady (novel) 1905, translated as the Lady in Blue, 1922.
Lush grass (narration) 1905
The man with the many names (novel) 1906
The black cord (novel) 1908, Translated as the Man with the Black Cord, 1911.
The red Mercury (novel) 1910
The Cross of the Welser (Roman) 1912
The secret of the Hermitage (novel) 1916
The Pentagram (novella) 1916
The Wandering Light (Roman) 1922
Some or all works by this author are in the public domain in the United States because they were published before January 1, 1924.
The author died in 1929, so works by this author are also in the public domain in countries and areas where the copyright term is the author's life plus 80 years or less. Works by this author may also be in the public domain in countries and areas with longer native copyright terms that apply the rule of the shorter term to foreign works.