Dr Palfrey

1 Traitor's Doom (1942)
2 The Legion of the Lost (1943)
3 The Perilous Country (1943)
     aka The Valley of Fear
4 Dangerous Quest (1944)
5 Death in the Rising Sun (1945)
6 The Hounds of Vengeance (1945)
7 Shadow of Doom (1946)
8 The House of the Bears (1946)
9 Dark Harvest (1947)
10 The Wings of Peace (1948)
11 The Sons of Satan (1948)
12 The Dawn of Darkness (1949)
13 The League of Light (1949)
14 The Man Who Shook the World (1950)
15 The Prophet of Fire (1951)
16 The Killers of Innocence (1952)
     aka The Children of Hate
17 The Touch of Death (1954)
18 The Mists of Fear (1955)
19 The Flood (1956)
20 The Plague of Silence (1958)
21 The Drought (1959)
     aka Dry Spell
22 The Terror (1962)
23 The Depths (1963)
24 The Sleep (1964)
25 The Inferno (1965)
26 The Famine (1967)
27 The Blight (1968)
28 The Oasis (1969)
29 The Smog (1970)
30 The Unbegotten (1971)
31 The Insulators (1972)
32 The Voiceless Ones (1973)
33 The Thunder-Maker (1976)
34 The Whirlwind (1979)