Simon Vaughn (writing as Martin Fallon)
1. The Dark Side of the Street (1967)
3. Day of Judgement (1978)

Paul Chavasse (writing as Martin Fallon)
1. The Testament of Caspar Schultz (1962)
     aka The Bormann Testament
2. Year of the Tiger (1963)
3. The Keys of Hell (1965)
4. Midnight Never Comes (1966)
5. The Dark Side of the Street (1967)
6. A Fine Night for Dying (1969)
7. Day of Judgement (1978)

Nick Miller
1. The Graveyard Shift (1965)
2. Brought in Dead (1967)
3. Hell Is Always Today (1968)

Sad Wind from the Sea (1959)
Cry of the Hunter (1960)
The Thousand Faces of Night (1961)
Hell Is Too Crowded (1962)
Comes the Dark Stranger (1962)
Seven Pillars to Hell (1963) (writing as Hugh Marlowe)
     aka Sheba
Pay the Devil (1963)
The Dark Side of the Island (1963)
Passage By Night (1964) (writing as Hugh Marlowe)
A Phoenix in Blood (1964)
Thunder At Noon (1964)
     aka Dillinger
Wrath of the Lion (1964)
The Iron Tiger (1966)
A Candle for the Dead (1966) (writing as Hugh Marlowe)
     aka The Violent Enemy
A Game for Heroes (1970) (writing as James Graham)
Toll for the Brave (1971)
The Wrath of God (1971) (writing as James Graham)
The Khufra Run (1972) (writing as James Graham)
The Run to Morning (1974) (writing as James Graham)
     aka Bloody Passage
To Catch a King (1979)
     aka The Judas Gate