Novels[]
- 1979 – The Ritual
- 1980 – The Houngan
- 1981 – Ghost Mansion
- 1981 – Death-Coach
- 1981 – Death-Angel
- 1981 – Premonition
- 1981 – Horror House
- 1981 – Queen of Hell
- 1981 – The Banished
- 1981 – The Tulpa
- 1982 – Horror Mansion
- 1982 – Death-School
- 1982 – Death-Doctor
- 1982 – Brotherkind
- 1982 – Extraterrestrial as Julian Shock
- 1982 – Playmates
- 1982 – The Evil One
- 1983 – The Dentist
- 1984 – Babel's Children
- 1984 – The Offspring
- 1984 – Ghost
- 1985 – The Longest Night
- 1986 – Wards of Armageddon with John Maclay
- 1987 – Noonspell
- 1987 – Evil Offspring
- 1988 – Dead to the World
- 1988 – The Black School
- 1989 – Shadows of Death
- 1991 – Hell Storm
- 1991 – The Night Seasons
- 1992 – The Monastery
- 1993 – The Book of Webster's
- 1993 – Don't Take Away the Light
- 1994 – Bloodlines
- 1999 – The Haunt
- 2001 – Affinity
Novellas[]
- 1986 – The Night Seasons
- 1986 – The House of Life
Anthologies[]
- 1984 – Masques
- 1987 – Masques II
- 1988 – The Best of Masques
- 1989 – Masques III
- 1991 – Masques IV
- 2001 – Dark Masques
- 2002 – Darker Masques
- 2006 – Masques V with Gary A. Braunbeck
Collections[]
- 1983 – Anomalies
- 1983 – Nevermore!
- 1991 – The Naked Flesh of Feeling
- 1993 – The Fifth Season
- 2000 – Frights of Fancy
Novelettes[]
- 1986 – The Book of Webster's
- 1990 – The Bridge People
- 1991 – No Love Lost
- 1991 – Herrenrasse
- 1992 – The Girl of My Dreams
- 1993 – Just One More Thing People Can Do
- 1993 – Reality Function
- 1993 – Frankenstein Seen in the Ice of Extinction
- 1994 – Child of the Sea
- 1995 – Origin of a Species
- 1995 – High Concept
- 1995 – The Last Link Between Life and Death
- 1996 – Beasts in Buildings, Turning 'Round
- 1996 – Two Hands Are Better Than One
- 1996 – Hildekin and the Big Diehl
- 1997 – It Does Not Come Alone
- 2000 – A. Pyme
Short Stories[]
- 1966 – time to Murder
- 1970 – They Never Even See Me
- 1976 – Golden Years
- 1977 – Statement of the Accused
- 1983 – Absolute Peace and Quiet
- 1983 – Anything to Help the Duke
- 1983 – Belonging
- 1983 – Keeping Christmas
- 1983 – Stalemate
- 1983 – The Dotted Line
- 1983 – Turning 40 for Fun and Prophet
- 1983 – Review of the Latest Arrivals
- 1984 – Leitmotif
- 1984 – Milestones
- 1984 – Vital Parts
- 1984 – House Mothers
- 1984 – Nature and Mr. Humphries
- 1984 – Small Gift from Home
- 1985 – Aspirations
- 1985 – The Bus People
- 1985 – The Dearly Departed
- 1985 – The Gap Nearly Closed Today
- 1985 – Uncoverup
- 1985 – "Don't"
- 1985 – A Matter of Identification
- 1985 – Little Doll from the Backwoods
- 1985 – Souvenir
- 1985 – I'll Give You My Magic, If You'll Give Me Your Love
- 1985 – Orwell Redux
- 1985 – Flush with Milton Hillman
- 1985 – One Look at You & the Earth Moves Beneath My Feet
- 1986 – Bleed Bargaining
- 1986 – Helter-Skelter!
- 1986 – If I Make My Bed in Hell
- 1986 – Renunciations
- 1986 – The Bountiful Spirit
- 1986 – The Scars of Bonding
- 1986 – The Legend of Lincoln County
- 1986 – The Queerness of Time
- 1986 – The Final Stages of the Creeping Crud
- 1986 – Devil's Powder
- 1987 – Conspiracies
- 1987 – Privacy Rights
- 1987 – Starry Coping
- 1987 – The Better Half
- 1987 – Townkiller
- 1987 – Wordsong
- 1987 – Happy Hour
- 1987 – Watchwolf
- 1988 – After-Howl
- 1988 – Fancy That
- 1988 – Mercy
- 1988 – Nosmael
- 1988 – Public Places
- 1988 – Two Floor Generals and the Sweetheart Dance
- 1989 – Jezebel
- 1989 – Monstrum
- 1989 – The Unkindest Cut
- 1989 – Overnight Pass with John Maclay
- 1989 – You'd Better Watch Out
- 1989 – Too Hideous to be Played
- 1989 – Everyone Must Know...
- 1989 – Pact
- 1989 – Vampire Nostalgia
- 1989 – The Sudd
- 1990 – Parnassus on Wheels II
- 1990 – My Brother, the Sex Fiend with D. W. Taylor
- 1990 – Sleepover
- 1990 – Happier Endings
- 1990 – Wotan's Oak
- 1991 – Something Extra with James Kisner
- 1991 – The Oldest Human Trick
- 1991 – Collaborationists
- 1991 – Land of the Second Chance
- 1992 – Eater of the Dead
- 1992 – The Train Man
- 1992 – Watchful Eyes
- 1992 – Free Among the Dead
- 1993 – Cycles
- 1993 – God's Mouth to Your Ear
- 1993 – Health Hazard
- 1993 – Snowlight
- 1993 – The Carolers
- 1993 – Troth
- 1993 – Dead Body Run
- 1993 – Goddam Time with Scott Fogel
- 1994 – Indecent Proponent
- 1994 – The Autonomic Nervous System, Klaus Von Clausewitz, and Omilian
- 1994 – The Field of Blood
- 1994 – The Last Nazi Invasion
- 1994 – Mostly the Evil Shows
- 1994 – The Vardoger
- 1995 – Time Tells Us
- 1995 – Vladimir's Conversions
- 1995 – The Mother Pact
- 1995 – A Misunderstanding at Midnight
- 1996 – On the Late Train Through Texas
- 1997 – The Piano Player Has No Fingers
- 2000 – Pick-Up
- 2000 – When Nature Itself Creates Them
- 2006 – Outcry
Poems[]
- 1984 – Skin Dying
- 1991 – The End Is (Too) Near
Non-Fiction[]
- 1985 – The New Devil's Dictionary: Creepy Cliches and Sinister Synonyms
- 1987 – How to Write Tales of Horror, Fantasy & Science Fiction