Chief Inspector William Austen

1 Old Mrs. Fitzgerald (1939)
2 The Wicked Flee (1940)
3 Miss Milverton (1941)
     aka Poison Is A Bitter Brew
4 One Shall Be Taken (1942)
5 Nile Green (1943)
     aka Death Loves a Shining Mark
6 Six Green Bottles (1943)
7 The Vultures Gather (1945)
8 Death At the Wedding (1946)
9 The Finishing Touch (1947)
     aka Prussian Blue
10 At The Cedars (1949)
11 Death Disturbs Mr. Jefferson (1950)
12 Mediterranean Murder (1951)
     aka Killing Kin
13 The Best Laid Plans (1952)
14 There's Death in the Cup (1952)
15 Death Among The Tulips (1953)
16 The Evil That Men Do (1953)
17 And No One Wept (1954)
18 Poison In Paradise (1955)
19 A Reason for Murder (1955)
20 Murder at Mid-Day (1956)
21 Relative Murder (1957)
22 The Simple Way of Poison (1957)
23 Epitaph for a Nurse (1958)
     aka A Victim Must Be Found
24 Poisoned Chalice (1959)
25 To Cease Upon the Midnight (1959)
26 The Thin-spun Life (1960)
27 Candidates for Murder (1961)
28 He Had to Die (1962)
29 Murder Cries Out (1968)