LaNague
1. Healer (1976)
2. Wheels within Wheels (1978)
3. An Enemy of the State (1980)
4. Dydeetown World (1989)
5. The Tery (1989)
The LaNague Chronicles (omnibus) (1992)

Adversary Cycle
1. The Keep (1981)
2. The Tomb (1984)
3. The Touch (1986)
4. Reborn (1990)
5. Reprisal (1991)
6. Nightworld (1992)

Repairman Jack
1. Legacies (1998) (writing as Colin Andrews)
2. Conspiracies (1999)
3. All the Rage (2000)
4. Hosts (2001)
5. The Haunted Air (2002)
6. Gateways (2003)
7. Crisscross (2004)
8. Infernal (2005)
9. Harbingers (2006)
10. Bloodline (2007)
11. By the Sword (2008)
12. Ground Zero (2009)
13. Fatal Error (2010)
15. The Dark at the End (2011)
The Last Rakosh (2005)
Quick Fixes: Tales of Repairman Jack (2011)

Sims
1. La Causa (2000)
2. The Portero Method (2001)
3. Meerm (2002)
4. Zero (2005)
5. Thy Brother's Keeper (2008)
Sims (omnibus) (2003)

Jack
1. Secret Histories (2008)
2. Secret Circles (2010)
3. Secret Vengeance (2011)

Black Wind (1988)
Midnight Mass (1990)
Sibs (1991)
     aka Sister Night
The Barrens (1992)
The Foundation (1993) (writing as Colin Andrews)
     aka The Select
Virgin (1995) (writing as Mary Elizabeth Murphy)
Implant (1995) (writing as Colin Andrews)
Deep as the Marrow (1996) (writing as Colin Andrews)
Mirage (1996) (with Matthew J Costello)
Nightkill (1997) (with Steven Spruill)
Masque (1998) (with Matthew J Costello)
     aka DNA Wars
Artifact (2003) (with Kevin J Anderson, Janet Berliner, Matthew J Costello)
The Fifth Harmonic (2003)
Draculas (2010) (with Blake Crouch, Jack Kilborn, J A Konrath, Jeff Strand)

Binary Star, no. 2. (1979) (with Gordon Eklund)

Completely Doomed (2007) (with Robert Bloch, Richard Matheson, David J Schow)
Sex Slaves Of The Dragon Tong: Dark Voices Volume 6 (2007)

Masques: All New Works of Horror and the Supernatural (1984)
Whispers VI (1987)
Night Visions 6: The Bone Yard (1988)
Silver Scream (1988)
Hot Blood: Tales of Provocative Horror (1989)
New Destinies, Vol. VII (1989)
The Year's Best Fantasy Second Annual Collection (1989)
     aka Demons and Dreams
Between Time and Terror (1990)
Lovecraft's Legacy (1990)
The Mammoth Book of Terror (1990)
Best New Horror 2 (1991)
The Mammoth Book of Vampires (1992)
Predators (1993)
The Best of Weird Tales (1995)
Cthulhu 2000: A Lovecraftian Anthology (1995)
David Copperfield's Tales of the Impossible (1995)
Great Writers and Kids Write Spooky Stories (1995)
Night Screams (1995)
100 Tiny Tales of Terror (1996)
Diagnosis - Terminal: An Anthology of Medical Terror (1996)
Rivals of Dracula (1996)
Dancing with the Dark (1997)
A Magic-Lover's Treasury of the Fantastic (1997)
The Mammoth Book of Dracula: Vampire Tales for the New Millennium (1997)
Millennium (1997)
999 (1999)
Vampire Slayers: Stories of Those Who Dare to Take Back the Night (1999)
The Mammoth Book of Best New Horror Volume Eleven (2000)