John Gregory Betancourt

Hercules
1. The Wrath of Poseidon (1997)
2. The Vengeance of Hera (1997)
3. The Gates of Hades (1997)

Roger Zelazny's Dawn of Amber
continued from the original series by Roger Zelazny
1. Nine Princes of Chaos (2002)
     aka The Dawn of Amber
2. Chaos and Amber (2003)
3. To Rule in Amber (2004)
4. Shadows of Amber (2005)

Starskimmer (1986)
Rogue Pirate (1987)
The Blind Archer (1988)
Johnny Zed (1988)
Rememory (1990)
Performance Art (1992)
Cutthroat Island (1995)
Pacifica (2002) (with Linda E Bushyager)
The Dragon Sorcerer (2003)

Slab's Tavern (1987)
Playing in Wonderland (1994)
The Science Fiction Megapack (2011) (with James Blish, Ben Bova, Randall Garrett, C M Kornbluth, C L Moore and Robert Silverberg)
The Vampire Megapack (2012) (with John David Anderson, Jason Andrew, Zach Bartlett, E F Benson, Luigi Capuana, Ray Cluley, Michael R Collings, Peter Darbyshire, Théophile Gautier, Franz Hartmann, Nina Kiriki Hoffman, Henry Kuttner, Michael McCarty and Terrie Leigh Relf, Darrell Schweitzer, Bram Stoker, Lawrence Watt-Evans and Chelsea Quinn Yarbro)
The Werewolf Megapack (2013) (with Guy de Maupassant, Alexandre Dumas, Nina Kiriki Hoffman, Rudyard Kipling, Jay Lake, Saki and Chelsea Quinn Yarbro)
The Time Travel Megapack (2013) (with Reginald Bretnor, Damien Broderick, C J Henderson, Edward M Lerner, Richard A Lupoff, William F Nolan, James H Schmitz, Darrell Schweitzer and Clifford D Simak)
The Seventh Science Fiction Megapack (2013) (with Poul Anderson, Jerome Bixby, Marion Zimmer Bradley, Reginald Bretnor, Grendel Briarton (Reginald Bretnor), Damien Broderick, Fredric Brown, Arthur C Clarkes, Mark Clifton, Geoffrey Cobbe, Michael R Collings, Lester del Rey, C J Henderson, Michael Kurland, Edward M Lerner, Mike Resnick, Jesse Roarke, Robert Silverberg, Clifford D Simak, Jerry Sohl, Lawrence Watt-Evans, Richard Wilson and Robert F Young)
The Sherlock Holmes Megapack (2014) (with Marc Bilgrey, Rhys Bowen, Carla Coupe, Jack Grochot, Bruce Kilstein, Michael Kurland, Gary Lovisi, Richard A Lupoff, Michael Mallory, Adam Beau McFarlane, Thos. Kent Miller, Mike Resnick, Linda Robertson, Kristine Kathryn Rusch, Robert J Sawyer, Stan Trybulski and Mark Wardecker)
The Weird Fiction Megapack: 25 Stories from Weird Tales (2014) (with Zealia Bishop, Paul Compton, Mary Elizabeth Counselman, Nictzin Dyalhis, Paul Ernst, Robert E Howard, Malcolm Jameson, Jr., Ronal Kayser, Henry Kuttner, Julius Long, H P Lovecraft, Bassett Morgan, Earl Peirce, G.G. Pendarves, E Hoffmann Price, Dorothy Quick, D.W. Rimel, Darrell Schweitzer, Clark Ashton Smith, Pearl Norton Swet, Steve Rasnic Tem, Howard Wandrei, Manly Wade Wellman and Tennessee Williams)
The Second Mystery Megapack: 25 Modern & Classic Mystery Stories (2014) (with Ray Cummings, John L French, Ron Goulart, Michael Hemmingson, Arlette Lees, Jean Lorrah and Mack Reynolds)
The Mad Scientist Megapack (2014) (with Hugh B Cave, Theodore R Cogswell, Jack Dolphin, Craig Ellis, Leslie J. Furlong, H B Fyfe, J U Giesy, Edmond Hamilton, Nathaniel Hawthorne, C. J. Henderson, Carl Jacobi, Matthew Johnson, Henry J. Kostkos, Edward M Lerner, H P Lovecraft, David V. Reed, Ed Earl Repp, Clark Ashton Smith, Robert Louis Stevenson and Lawrence Watt-Evans)
X is for Xmas: A Christmas Mystery MEGAPACK TM (2015) (with William G Bogart, Lillian Stewart Carl, Wilkie Collins, Ron Goulart, Sue Ann Jaffarian, Johnston McCulley, Meredith Nicholson and Liz Zelvin)
The 11th Science Fiction MEGAPACK (2016) (with Poul Anderson, Manly Banister, Jerome Bixby, J F Bone, Marion Zimmer Bradley, Hal Clement, Mark Clifton, Lester del Rey, Simon Eisner, E Everett Evans, H B Fyfe, Christopher Grimm, James E Gunn, Raymond F Jones, C M Kornbluth, Fritz Leiber, Murray Leinster, Katherine MacLean, William Morrison, Frederik Pohl, Frank M Robinson, Ross Rocklynne, Tony Rothman, Robert Silverberg, Clifford D Simak, Evelyn E Smith, Stephen Tall, William Tenn, Sydney J Van Scyoc, F. L. Wallace, Robert Moore Williams, Donald A Wollheim and Robert F Young)
The 12th Science Fiction MEGAPACK (2016) (with Poul Anderson, Alan Arkin, Manly Banister, Jerome Bixby, Ray Bradbury, Rosel George Brown, Lucius Daniel, Lester del Rey, Philip K Dick, H.B. Hickey, R A Lafferty, Keith Laumer, Fritz Leiber, Murray Leinster, Richard Matheson, Walter M Miller, Chad Oliver, Talmage Powell, Mack Reynolds, Frank M Robinson, Tony Rothman, Kristine Kathryn Rusch, Dean Wesley Smith, George O Smith and Jim Wannamaker)
The First Science Fiction Novel MEGAPACK (2016) (with Lester del Rey, Jay Franklin, Laurence M Janifer, Frederik Pohl and Mack Reynolds)

Dr Bones
4. The Dragons of Komako (1989)

Robert Silverberg's Time Tours (as by Thomas Shadwell)
4. The Dinosaur Trackers (1991)

Dragonflight (with Kevin J Anderson)
Born of Elven Blood (1994)

Star Trek : Deep Space Nine
11. Devil in the Sky (1995) (with Greg Cox)
17. The Heart of the Warrior (1996)

Star Trek : Voyager
5. Incident at Arbuk (1995)

Birthright
4. The Hag's Contract (1996)

Star Trek : The Next Generation
51. Infection (1999)
Double Helix Omnibus (omnibus) (2002) (with Diane Carey, Peter David, Michael Jan Friedman, Christie Golden, Kristine Kathryn Rusch, Dean Wesley Smith and John Vornholt)

Ultimate...
The Ultimate Witch (1993) (with Byron Preiss)
The Ultimate Zombie (1993) (with Byron Preiss)
The Ultimate Alien (1995) (with Keith R A DeCandido and Byron Preiss)
The Ultimate Undead (2006) (with Byron Preiss)

Swashbuckling Editor Stories (1993)
The Best of Weird Tales (1995) (with Marvin Kaye)
Pulp Classics: Ghost Stories (June 1931) (2004)
Horrorscape (2005)
Horrorscape 2 (2005)
Horror: The Best Of 2005 (2006)
Horror: The Best of the Year (2006) (with Sean Wallace)
Murder Most Conventional (2016) (with Kate Flora, KB In, Su Kopil, Frances McNamara, Katherine Hall Page, Gigi Pandian, Neil Plakcy, Hank Phillippi Ryan, B K Stevens, Marcia Talley, Victoria Thompson and Charles Todd)

Serve It Forth (1996) (with Anne McCaffrey)
The Sci-Fi Channel Trivia Book (1996)
The Sci-Fi Channel Encyclopedia of TV Science Fiction (1997)