 Pseudonym of Jim Czajkowski. He has a doctorate in veterinary medicine and had his own practice in Sacramento, California. He is now a full-time writer. He also writes fantasy novels under the pseudonym 'James Clemens'. He is the creator of the 'Sigma Force' series featuring a covert arm of the Defense Department. Visit also his official site. |
Titles and year of publication:
| 'Sigma Force' Novels | |
| 1) Sandstorm | 2004 |
| 2) Map of Bones | 2005 |
| 3) Black Order | 2006 |
| 4) The Judas Strain | 2007 |
| 5) The Last Oracle | 2008 |
| 6) The Doomsday Key | 2009 |
| 7) The Devil Colony | 2011 |
| 8) Bloodline | 2012 |
| 9) The Eye of God | 2013 |
| 10) The 6th Extinction | 2014 |
| 11) The Bone Labyrinth | 2015 |
| 12) The Seventh Plague | 2016 |
| 13) The Demon Crown | 2017 |
| 14) Crucible | 2019 |
| 15) The Last Odyssey | 2020 |
| 16) Kingdom of Bones | 2022 |
| 17) Tides of Fire | 2023 |
| Other Novels | |
| 1) Subterranean | 1999 |
| 2) Excavation | 2000 |
| 3) Deep Fathom | 2001 |
| 4) Amazonia | 2002 |
| 5) Ice Hunt | 2003 |
| 6) Altar of Eden | 2010 |
| 7) City of Screams (e-story) (with Rebecca Cantrell) | 2012 |
| 8) The Blood Gospel (with Rebecca Cantrell) | 2013 |
| 9) Innocent Blood (with Rebecca Cantrell) | 2013 |
| 10) Blood Brothers (e-story) (with Rebecca Cantrell) | 2014 |
| 11) The Kill Switch (with Grant Blackwood) | 2014 |
| 12) Blood Infernal (with Rebecca Cantrell) | 2015 |
| 13) War Hawk (with Grant Blackwood) | 2016 |
| 14) The Starless Crown | 2022 |
| 15) The Cradle of Ice | 2023 |