I pulled this from Wikipedia:

 

Miss Silver series

 

  • Grey Mask, 1928; Read 8/16/17
  • The Case Is Closed, 1937; Read 11/15/18
  • Lonesome Road, 1939; Read 11/30/18
  • Danger Point (USA: In the Balance), 1941
  • The Chinese Shawl, 1943
  • Miss Silver Intervenes (USA: Miss Silver Deals with Death), 1943
  • The Clock Strikes Twelve, 1944; Read 10/16/18
  • The Key, 1944
  • The Traveller Returns (USA: She Came Back), 1945
  • Pilgrim's Rest (or: Dark Threat), 1946
  • Latter End, 1947
  • Spotlight (USA: Wicked Uncle) (library), 1947
  • The Case of William Smith (library), 1948
  • Eternity Ring, 1948; Read 10/4/18
  • The Catherine Wheel, 1949
  • Miss Silver Comes to Stay, 1949
  • The Brading Collection (library) (or: Mr Brading's Collection), 1950
  • The Ivory Dagger (library), 1951
  • Through the Wall, 1950
  • Anna, Where Are You? (or: Death At Deep End), 1951
  • The Watersplash, 1951
  • Ladies' Bane, 1952
  • Out of the Past, 1953
  • The Silent Pool (library), 1954
  • Vanishing Point (paperback), 1953
  • The Benevent Treasure (library), 1953
  • The Gazebo (library) (or: The Summerhouse), 1955
  • The Listening Eye (library), 1955
  • Poison in the Pen, 1955; Read 3/24/19
  • The Fingerprint (library), 1956
  • The Alington Inheritance (library), 1958
  • The Girl in the Cellar, 1961

Frank Garrett series

 

  • Dead or Alive, 1936
  • Rolling Stone, 1940

Ernest Lamb series

 

  • The Blind Side, 1939
  • Who Pays the Piper? (USA: Account Rendered), 1940
  • Pursuit of a Parcel, 1942

 

Benbow Smith

 

  • Fool Errant, 1929
  • Danger Calling, 1931
  • Walk with Care, 1933
  • Down Under, 1937

Standalone

 

  • A Marriage under the Terror, 1910
  • A Child's Rhyme Book, 1910
  • A Little More Than Kin (or: More Than Kin), 1911
  • The Devil's Wind, 1912
  • The Fire Within, 1913
  • Simon Heriot, 1914
  • Queen Anne Is Dead, 1915
  • Earl or Chieftain?, 1919
  • The Astonishing Adventure of Jane Smith, 1923. Serialised, Baltimore Evening Sun, 1925
  • The Red Lacquer Case, 1924
  • The Annam Jewel, 1924
  • The Black Cabinet, 1925
  • The Dower House Mystery, 1925; Read 10/14/17
  • The Amazing Chance, 1926
  • Hue and Cry, 1927
  • Anne Belinda, 1927
  • Will-o'-the-Wisp, 1928
  • Beggar's Choice, 1930
  • The Coldstone, 1930
  • Kingdom Lost, 1931
  • Nothing Venture, 1932; Read 12/2/18
  • Red Danger (USA: Red Shadow), 1932
  • Seven Green Stones (USA: Outrageous Fortune), 1933
  • Devil-in-the-Dark (USA: Touch And Go), 1934
  • Fear by Night, 1934
  • Red Stefan, 1935
  • Blindfold, 1935
  • Hole and Corner, 1936
  • Mr Zero, 1938
  • Run!, 1938
  • Unlawful Occasions (USA: Weekend with Death), 1941
  • Beneath the Hunter's Moon, 1945
  • Silence in Court, 1947
  • The Pool of Dreams: Poems, 1953