| Time of the Fourth Horseman | 1976 |
| False Dawn | 1978 |
| Ariosto | 1980 |
| Sins of Omision | 1980 |
| Dead and Buried | 1980 |
| Four Horses for Tishtry | 1983 |
| The Godforsaken | 1983 |
| Hyacinths | 1983 |
| Locadio's Apprentice | 1984 |
| Nomads | 1984 |
| Floating Illusions | 1985 |
| A Mortal Glamour | 1985 |
| To the High Redoubt | 1985 |
| A Baroque Fable | 1986 |
| Firecode | 1987 |
| Taji's Syndrome | 1988 |
| Beastnights | 1989 |
| Crown of Empire | 1993 |
| Monet's Ghost | 1997 |
| Magnificat | 1999 |
| Merchant Prince: Outrageous Fortune (with Armin Shimerman) | |
| Alas, Poor Yorick: A Fool's Tale | 2002 |
Charles Spotted Moon Series |
|
| Ogilve, Tallant, & Moon | 1976 |
| Music When Sweet Voices Die | 1979 |
| Poison Fruit | 1991 |
| Cat's Claw | 1991 |
| False Notes | 1991 |
Saint-Germain Cycle |
|
| Hotel Transylvania | 1978 |
| The Palace | 1978 |
| Blood Games | 1979 |
| Path of the Eclipse | 1981 |
| Tempting Fate | 1982 |
| Spider Glass | 1991 |
| Darker Jewels | 1993 |
| Better in the Dark | 1993 |
| Mansions of Darkness | 1996 |
| Writ in Blood | 1997 |
| Blood Roses | 1998 |
| Dark Light: Shattered Light 2 | 1999 |
| Communion in Blood | 1999 |
| Come Twilight | 2000 |
| A Feast in Exile | 2001 |
| Night Blooming | 2002 |
| Midnight Harvest | 2003 |
| Dark of the Sun | 2004 |
| States of Grace | 2005 |
| Roman Dusk | 2006 |
| Borne in Blood | 2007 |
| A Dangerous Climate | 2008 |
| Saint-Germaine Memoirs | 2008 |
Olivia Series |
|
| A Flame in Byzantium | 1986 |
| Crusader's Torch | 1988 |
| A Candle for D'Artagnan | 1989 |
The Law in Charity |
|
| The Law in Charity | 1989 |
| Charity, Colorado | 1992 |
Madelaine de Montalia Series |
|
| Out of the House of Life | 1990 |
| In the Face of Death | 2001 |
Brides of Dracula Trilogy |
|
| Kelene: The Angry Angel | 1998 |
| Fenice: Soul of an Angel | 1999 |
War and Honor Series (with Gordon R Dickson, Shariann Lewitt, Steve Perry) |
|
| The Harriers | 1991 |
| Blood and War | 1993 |
Collections |
|
| Cautionary Tales | 1978 |
| Signs and Portents | 1984 |
| The Vampire Stories of Chelsea Quinn Yarbro | 1994 |
| Apprehensions and Other Delusions | 2003 |
Chapbooks |
|
| On Saint Hubert's Thing | 1982 |
Graphic Novels |
|
| The Lost Prince | 2007 |
Anthologies Edited |
|
| Two Views of Wonder | 1973 |
Anthologies Contributed To |
|
| "False Dawn" - Strange Bedfellows | 1972 |
| "The Generalissimo's Butterfly" - Dark Sins, Dark Dreams | 1977 |
| "Space/Time Arabesque" - Cassandra Rising | 1978 |
| "When it Changed" - The New Women of Wonder | 1978 |
| Shadows 3 | 1980 |
| Shadows 4 | 1981 |
| Shadows 5 | 1982 |
| Fears | 1983 |
| "The Arrows" - The Dodd Mead Gallery of Horror | 1983 |
| Shadows 7 | 1984 |
| "Do I Dare Eat a Peach?" - Shadows 8 | 1985 |
| "Night Catch" - Greystone Bay | 1985 |
| "Disturb Not My Slumbering Fair" - Young Monsters | 1985 |
| Terrorists of Tomorrow | 1985 |
| Cutting Edge | 1986 |
| Horrors | 1986 |
| Masters of Darkness | 1986 |
| A Century of Horror 1970-1979: The Greatest Stories of the Decade | 1987 |
| "Lapses" - The Black Lizard Anthology of Crime Fiction | 1987 |
| "Cabin 33" - The Penguin Book of Vampire Stories | 1987 |
| "Do I Dare Eat a Peach?" - Sisters in Crime 3 | 1990 |
| "Advocates" with Suzy McKee Charnas - Under the Fang | 1991 |
| "Salome" - The Bradbury Chronicles Stories in Honor of Ray Bradbury | 1991 |
| "Do I Dare Eat a Peach?" - A Whisper of Blood | 1991 |
| Beyond the Gate of Worlds | 1991 |
| "Investigatin Jericho" - The Mammoth Book of Vampires | 1992 |
| Deathport | 1993 |
| Ghosttide | 1993 |
| In The Fog: The Final Chronicles of Greystone Bay | 1993 |
| The Ultimate Zombie | 1993 |
| "Do Not Pass Go Do Not Collect $200" - Earth Strikes Back | 1994 |
| "Tin Lizzies" - The Ultimate Dragon | 1995 |
| Strangers in the Night | 1995 |
| Women of Wonder | 1995 |
| Virtuous Vampires | 1996 |
| Blood Lines: Vampire Stories From New England | 1997 |
| Blood Thirst: 100 Years of Vampire Fiction | 1997 |
| Don't Open This Book! | 1998 |
| Graven Images | 2000 |
| Dracula In London | 2001 |
Short Stories |
|
| "Frog Pond" | 1971 |
| "Everything That Begins With An 'M'" | 1972 |
| "False Dawn" | 1972 |
| "A Time of the Fourth Horseman" | 1972 |
| "The Ghosts at Iron River" | 1973 |
| "The Meaning of the Word" | 1973 |
| "Un Bel Di" | 1973 |
| "The Fellini Beggar" | 1975 |
| "Into My Own" | 1975 |
| "Dead In Irons" | 1976 |
| "Lammas Night" | 1976 |
| "Allies" | 1977 |
| "Best Interests" | 1978 |
| "Hotel Transylvania (excerpt)" | 1978 |
| "Swan Song" | 1978 |
| "Fugitive Colors" | 1979 |
| "Savoury, Sage, Rosemary and Thyme" | 1981 |
| "The Spider Glass: An Edwardian Story" | 1981 |
| "Renewal" |
1982 |
| "Coasting" | 1983 |
| "Depth of Focus" | 1984 |
| "Do Not Forsake Me, O My Darlin'" | 1984 |
| "The End of the Carnival" | 1984 |
| "The Creatures That Walked In Darkness" | 1993 |
| "Echoes" | 1993 |
| "Restoration Comedy" | 1993 |
| "Whiteface" | 1993 |
| "Become So Shining That We Cease To Be" | 1998 |
| "Giotto's Window" | 2000 |
Non-fiction Books |
|
| Confrontation at Lepanto | 2006 |
| Empires, Wars, and Battles | 2006 |
Michael Series |
|
| Messages from Michael | 1979 |
| More Mesages from Michael | 1986 |
| Michael's People | 1988 |
| Michael for the Millennium | 1995 |
Written as Vanessa Pryor |
|
| A Taste of Wine | 1982 |
Written as Quinn Fawcett |
|
Victoire Vernet Mysteries (with Bill Fawcett Illinois) |
|
| Napoleon Must Die | 1993 |
| Death Wears a Crown | 1993 |
Mycroft Holmes Series (with Bill Fawcett Illinois) |
|
| Against the Brotherhood | 1997 |
| Embassy Row | 1998 |
| The Flying Scotsman | 1999 |
| The Scottish Ploy | 2000 |
Ian Fleming Series (with Bill Fawcett Illinois) |
|
| Death to Spies | 2002 |
Written as Terry Nelson Bonner |
|
The Making of Australia Series |
|
| The Outback (#5) | 1983 |
Written as Trystam Kith |
|
| Trouble in the Forest vol I | 1985 |
| Trouble in the Forest vol II | 2004 |