Works:
Novels
Gray Widow’s War: The Gray Widow Trilogy Book 3, Falstaff Books, Charlotte, NC, October 2020
Gray Widow’s Web: The Gray Widow Trilogy Book 2, Falstaff Books, Charlotte, NC, October 2020
The Storm, Falstaff Books, Charlotte, NC, September 2020
Five Elements Book 3: The Crimson Serpent, HarperCollins, New York, April 2018
Five Elements Book 2: The Shadow City, HarperCollins, New York, July 2017
Five Elements Book 1: The Emerald Tablet, HarperCollins, New York, October 2016
Gray Widow’s Walk, Seventh Star Press, Lexington, May 2016
Transformers 2 Junior Novel (motion picture novelization), HarperCollins, New York, May 2009
Alex Unlimited Book 3: True Chemistry, Tokyopop/HarperCollins, New York, April 2008
Iron Man Teen Novelization (motion picture novelization), HarperCollins, New York, March 2008
Alex Unlimited Book 2: Split-Second Sight, Tokyopop/HarperCollins, New York, September 2007
Alex Unlimited Book 1: The Vosarak Code, Tokyopop/HarperCollins, New York, May 2007
Angel: Vengeance, Simon & Schuster, New York, August 2002 (co-written with Scott Ciencin)
Star Trek SCE: Some Assembly Required, Pocket Books, New York, January 2002 (co-written with Scott Ciencin)
Video games
Chronos (Oculus Rift), Gunfire Games, March 2016
Mafia 3 (Xbox One, PS4, PC), 2K Games/Hangar 13, 2016
Dying Light (Xbox One, PS4, PC), Warner Bros./Techland, January 2015
The Bureau: XCOM Declassified (Xbox 360, PS3, PC), 2K Games, August 2013
Transformers Prime: The Game (Wii, Wii U, Nintendo 3DS), Activision/Nowpro, October 2012
Transformers: Fall of Cybertron (Xbox 360, PS3, PC), Activision/High Moon Studios, August 2012
Prototype 2 (Xbox 360, PS3), Activision/Radical Entertainment, April 2012
Transformers: Dark of the Moon (Xbox 360, PS3, Wii), Activision/High Moon Studios/Behavior Interactive, July 2011
Transformers: War for Cybertron (Xbox 360, PS3, PC), Activision/High Moon Studios, June 2010
Transformers: Cybertron Adventures (Wii), Activision/Next Level Games, June 2010
James Cameron’s Avatar (Nintendo DS), Ubisoft Montreal, December 2009
Fallen Earth (PC), Icarus Studios, September 2009
Comics
Warriors: A Thief in ThunderClan, HarperCollins, June 2023
Warriors: Exile from ShadowClan, HarperCollins, June 2022
Warriors: Winds of Change, HarperCollins, June 2021
Warriors: A Shadow in RiverClan, HarperCollins, June 2020
LARP!, three 80-page graphic novels, Dark Horse Comics, Portland, May 2015
The Savage Sword of Robert E. Howard: The Maid of Winter’s Night, short story, Dark Horse Comics, Portland, July 2014
Terminator: Enemy of My Enemy, six-issue mini-series, Dark Horse Comics, Portland, February 2014
Eerie: Invulnerable, short story, Dark Horse Comics, Portland, February 2014
Bloodhound: Crowbar Medicine, five-issue mini-series, Dark Horse Comics, Portland, October 2013
Wrapped Up in You (My Boyfriend is a Monster #10), Lerner Books, Minneapolis, May 2012
Warriors: SkyClan and the Stranger: After the Flood, HarperCollins, April 2012
Warriors: SkyClan and the Stranger: Beyond the Code, HarperCollins, November 2011
Warriors: SkyClan and the Stranger: The Rescue, HarperCollins, July 2011
Warriors: Ravenpaw’s Path: The Heart of a Warrior, HarperCollins, Tokyopop, August 2010
Warriors: Ravenpaw’s Path: A Clan in Need, HarperCollins, Tokyopop, March 2010
Warriors: Ravenpaw’s Path: Shattered Peace, HarperCollins, Tokyopop, November 2009
My Boyfriend Bites (My Boyfriend is a Monster #3), Lerner Books, Minneapolis, July 2011
Warcraft: Death Knight, Tokyopop, Los Angeles, November 2009
Warcraft Legends: Bloodsail Buccaneer, short story, Tokyopop, Los Angeles, June 2009
Warriors: Return to the Clans, HarperCollins, Tokyopop, June 2009
Warcraft Legends: Crusader’s Blood, short story, Tokyopop, Los Angeles, March 2009
Warriors: Escape from the Forest, HarperCollins, Tokyopop, December 2008
Warcraft Legends: Miles to Go, short story, Tokyopop, Los Angeles, November 2008
Warriors: Into the Woods, HarperCollins, Tokyopop, September 2008
Warcraft Legends: How to Win Friends, short story, Tokyopop, Los Angeles, August 2008
Warriors: The Rise of Scourge, HarperCollins, Tokyopop, June 2008
Warriors: Graystripe’s Adventure: Warrior’s Return, HarperCollins, Tokyopop, ISBN 0061252336, 2008
Warriors: Graystripe’ Adventure: Warrior’s Refuge, HarperCollins, Tokyopop, ISBN 006125231X, 2007
Warriors: Graystripe’s Adventure: The Lost Warrior, HarperCollins, Tokyopop, ISBN 0061240206, 2007
Angel: Choice Cuts, one issue in five-issue mini-series, IDW Studios, San Diego, 2006
Hell, Michigan, four-issue mini-series, FC9 Publishing, Morristown, 2005
G.I. Joe Vs. The Transformers II, four-issue mini-series, Devil’s Due/Image Comics, Chicago, 2005
G.I. Joe Vs. The Transformers I, two issues in five-issue mini-series, Devil’s Due/Image Comics, Chicago, 2004
Bloodhound #1-10 (with Leonard Kirk), DC Comics, 2004–2005
Firestorm, DC Comics, 2004–2005
Micronauts, 3-issue mini-series, Devil’s Due, 2004
Vampirella: The Choir in the Mist, one issue, Harris Comics, New York, 2004
Metal Hurlant: Worship Service, short story, Humanoids Comics, Los Angeles, 2004
Voltron, Devil’s Due/Image Comics, Chicago, 2003-2004
G.I. Joe Frontline: Icebound, four-issue mini-series, Devil’s Due/Image Comics, Chicago, 2003
Micronauts, Devil’s Due/Image Comics, Chicago, 2003-2004
JSA: The Unholy Three, DC Comics, 2003
Superman Adventures, three issues, DC Comics, New York, 2002
Sabretooth: Mary Shelley Overdrive, 4-issue mini-series, Marvel Comics, 2002
Purgatori, Chaos! Comics, 2002-2012
Obergeist, Top Cow Productions, 2001–2002)
JLA: Gods and Monsters (with Josh Krach), DC Comics, 2001
Lazarus 5, DC Comics, 2000
JSA: The Liberty Files, DC Comics, 2000
Doctor Strange: The Flight of Bones, 4-issue mini-series, Marvel Knights, 1999
Aliens: Colonial Marines, two issues in ten-issue mini-series, Dark Horse Comics, Milwaukie, 1993
Universal Monsters: The Mummy, one-shot special, Dark Horse Comics, Milwaukie, 1992
Educational Comics
Twisted Journeys: Shipwrecked on Mad Island, Lerner Books, Minneapolis, August, 2009
Graphic Universe: Hero Twins: Against the Lords of Death (A Mayan Tale), Lerner Books, Minneapolis, March 2009
Graphic Universe: Guan Yu: Blood Brothers to the End (A Chinese Tale), Lerner Books, Minneapolis, March 2009
Twisted Journeys: Agent Mongoose & the Hypno-Beam Scheme, Lerner Books, Minneapolis, February 2009
Graphic Universe: Pigling: A Cinderella Story (A Korean Tale), Lerner Books, Minneapolis, November 2008
Twisted Journeys: Vampire Hunt, Lerner Books, Minneapolis, September 2008
Twisted Journeys: Alien Incident on Planet J, Lerner Books, Minneapolis, September 2008
Twisted Journeys: The Time Travel Trap, Lerner Books, Minneapolis, February 2008
Graphic Universe: The Smoking Mountain: The Story of Popocatepetl & Iztaccihuatl (An Aztec Tale), Lerner Books, Minneapolis, January 2008
Twisted Journeys: Escape From Pyramid X, Lerner Books, Minneapolis, July 2007
Graphic Universe: Odysseus: Escaping Poseidon’s Curse, Lerner Books, Minneapolis, June 2007