Abraham Stroud (writing as Geoffrey Caine)
1. Curse of the Vampire (1991)
2. Wake of the Werewolf (1991)
3. Legion of the Dead (1991)

Jessica Coran
1. Killer Instinct (1992)
2. Fatal Instinct (1993)
3. Primal Instinct (1994)
4. Darkest Instinct (1996)
5. Pure Instinct (1995)
6. Extreme Instinct (1998)
7. Blind Instinct (2000)
8. Bitter Instinct (2001)
9. Unnatural Instinct (2002)
10. Grave Instinct (2003)
11. Absolute Instinct (2004)

Lucas Stonecoat
1. Cutting Edge (1997)
2. Double Edge (1998)
3. Cold Edge (2001)
4. Final Edge (2004)

Alastair Ransom
1. City for Ransom (2006)
2. City of the Absent (2007)
2. Shadows in the White City (2007)

Sub-Zero! (1979)
Brain Watch (1985)
Aftershock (1987)
Salem's Child (1987)
Disembodied (1988)
Dead Man's Float (1988)
Decoy (1989) (writing as Stephen Robertson)
Blood Ties (1989) (writing as Stephen Robertson)
The Handyman (1990) (writing as Stephen Robertson)
Dr O (1991) (writing as Glenn Hale)
Fire and Flesh (2002) (writing as Evan Kingsbury)
PSI : Blue (2006)

Time Machine
12. Search for the Nile (1986)