Novels and Novellas
- Graves' Retreat (1989)
- The Poker Club (1990)
- What the Dead Men Say (1990)
- Wolf Moon (1993)
- Shadow Games (1996)
- Cast in Dark Waters (with Thomas Piccirilli) (2002)
Series
Jack Dwyer series
- Rough Cut (1985)
- New Improved Murder (1985)
- Murder Straight Up (1986)
- Murder in the Wings (1986)
- The Autumn Dead (1987)
- A Cry of Shadows (1990)
- What the dead man say (1990)
- The Dwyer Trilogy (1994) (a collection that includes The Autumn Dead, A Cry of Shadows, and the short story "Eye of the Beholder")
Tobin Series
- Murder in the Aisle (1987)
- Several Deaths Later (1988)
Jack Walsh Series
- The Night Remembers (1991)
Robert Payne Series
- Blood Moon (UK title Blood Red Moon) (1994)
- Hawk Moon (1995)
- Harlot’s Moon (1998)
- Voodoo Moon (2000)
Sam McCain Series
- The Day the Music Died (1999)
- Will You Still Love Me Tomorrow (2000)
- Wake Up Little Susie (2001)
- Save the Last Dance for Me (2002)
- Everybody’s Somebody’s Fool (2004)
- Breaking Up Is Hard To Do (2004)
- Fools Rush In (2007)
Dean Koontz Frankenstein series
From
Dean Koontz's Frankenstein series (they are co-authored by Dean Koontz):
Pen name books
As E.J. Gorman
- The Marilyn Letters
- The First Lady
- Daughter of Darkness
- Senatorial Privilege
As Daniel Ransom
- Toys In The Attic (1986)
- The Forsaken (1988)
- The Babysitter (1989)
- Nightmare Child (1990)
- The Serpent's Kiss (1992)
- The Long Midnight (1992)
- Night Screams (1996)
- The Zone Soldiers (1996)
Anthologies
As editor and contributor
- Stalkers: 19 Original Tales By the Masters of Terror (Dark Harvest Books, 1989)
- Cat Crimes (1991) with Martin H. Greenberg
- Prisoners and Other Stories (1992)
- Dark Crimes 1 (1991)
- Dark Crimes 2 (1993)
- Dark Whispers (1993)
- Cages (1995)
- Moonchasers (1996)
- Robert Bloch's Psychos (Cemetery Dance Publications, 1997) includes the short story "Out There in the Darkness"
- The Big Book of Noir (1998)
- Famous Blue Raincoat (1999)
- October Dreams (2000)
- Such a Good Girl (2001)
- The Dark Fantastic (2001)
- The Long Silence After (2001)
- The Long Ride Back (2004)
- Different Kinds of Dead (2006)
- Wolf Woman Bay and 9 More of the Finest Crime and Mystery Novellas of the Year! (2007) with Martin H. Greenberg
- Tales of Zorro (2008)