Novels[]
- 1982 – Garden of the Incubus
- 1985 – Unto the Altar
- 1985 – Kiss Not the Child
- 1986 – Evil Dreams
- 1986 – The Immortal
- 1987 – As Evil Does
- 1987 – The Pack as William Essex
- 1987 – Hands of Lucifer
- 1988 – Slime as William Essex
- 1988 – Venom
- 1988 – Vessel
- 1989 – From Below as William Essex
- 1989 – Book of the Dead
- 1990 – Comes the Wraith
- 1993 – The Curse
- 1995 – Monster
Short Stories[]
- 2000 – Move... Tomorrow