| Shadow of the Beast | 1998 |
| Dark Changeling | 1999 |
| Sealed in Blood | 2001 |
| Child of Twilight | 2003 |
| From The Dark Places | 2003 |
| Crimson Dreams | 2003 |
| Wild Sorceress (with Leslie Roy Carter) | 2004 |
| Embracing Darkness | 2005 |
| Maiden Flights | 2005 |
| Besieged Adept (with Leslie Roy Carter) | 2005 |
| Windwalker's Mate | 2008 |
| Omnibus | |
| Dark Dreams (with Dominique Adair, Kit Tunstall) | 2003 |
| Collections | |
| Heart's Desires and Dark Embraces | 2003 |
| Anthologies Edited | |
| Vampire In Literature | 1989 |
| Non-Fiction | |
| Shadow of a Shade | 1975 |
| Specter or Delusion? The Supernatural in Gothic Fiction | 1987 |
| Dracula: The Vampire and the Critics | 1988 |
| Different Blood: The Vampire As Alien | 2001 |