James Paul Czajkowski, who is known by his pen names James Rollins and James Clemens, is a successful American author. He was born in Chicago, Illinois on August 20, 1961 and later moved to Ballwin, Missouri where he graduated from Parkway West Senior High in 1979. Czajkowski went on to attend the University of Missouri in Columbia, Missouri, where he received his Doctorate in veterinary medicine in 1985.
As James Rollins, Czajkowski is a #1 New York Times bestselling author of action-adventure and thriller novels. His writing has been translated into over forty languages and has sold more than 20 million books worldwide. The New York Times has praised Rollins, saying that his work is what you would get if you combined Michael Crichton and Dan Brown in a particle accelerator. NPR has described his novels as adventurous and enormously engrossing. Rollins is known for his ability to bring unseen worlds, scientific breakthroughs, and historical secrets to life in his thrilling stories, all while maintaining a high level of suspense.
Before becoming a full-time author, Rollins practiced veterinary medicine in Sacramento, California for over a decade. He still volunteers at local shelters, showing his continued dedication to the field. Rollins currently resides in the Sierra Nevada Mountains with his two furry companions, Echo and Charlie. In his free time, he enjoys participating in outdoor activities such as scuba diving, spelunking, kayaking, and hiking. Traveling to new places is another passion of his, as it often inspires his next globe-trotting adventure.
Under the pen name James Clemens, Czajkowski writes fantasy novels, including The Banned and The Banished (Wit'ch) books and the Godslayer series.
Sigma Force Books
#
Title
Year
Goodreads
Amazon
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
2010
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
2018
15
The Last Odyssey
2020
16
Kingdom of Bones
2022
17
Tides of Fire
2023
18
Arkangel
2024
Sigma Force Short Stories/Novellas
#
Title
Year
Goodreads
Amazon
1
Kowalski's in Love
2006
2
The Skeleton Key
2011
3
Tracker
2012
4
The Devil's Bones (With: Steve Berry)
2014
5
The Devil's Bones
2014
6
The Midnight Watch
2015
7
Crash and Burn
2016
8
Ghost Ship
2017
The Banned and the Banished Books (as James Clemens)
#
Title
Year
Goodreads
Amazon
1
Wit'ch Fire ( As: James Clemens)
1998
2
Wit'ch Fire
1998
3
Wit'ch Storm
1999
4
Wit'ch Storm ( As: James Clemens)
1999
5
Wit'ch War ( As: James Clemens)
2000
6
Wit'ch War
2000
7
Wit'ch Gate
2001
8
Wit'ch Gate ( As: James Clemens)
2001
9
Wit'ch Star ( As: James Clemens)
2002
10
Wit'ch Star
2002
Godslayer Books (as James Clemens)
#
Title
Year
Goodreads
Amazon
1
Shadowfall
2005
2
Hinterland
2006
Jake Ransom Books
#
Title
Year
Goodreads
Amazon
1
Jake Ransom and the Skull King's Shadow
2009
2
Jake Ransom and the Howling Sphinx
2010
Moon Fall Books
#
Title
Year
Goodreads
Amazon
1
The Starless Crown
2022
2
The Cradle of Ice
2023
3
A Dragon of Black Glass
2025
Order Of The Sanguines Books (with Rebecca Cantrell)
#
Title
Year
Goodreads
Amazon
1
City of Screams
2012
2
The Blood Gospel
2013
3
Blood Brothers
2013
4
Innocent Blood
2013
5
Blood Infernal
2015
Tucker Wayne Books (with Grant Blackwood)
#
Title
Year
Goodreads
Amazon
1
The Kill Switch (With: Grant Blackwood)
2014
2
The Kill Switch
2014
3
War Hawk (With: Grant Blackwood)
2016
4
War Hawk
2016
Standalone Novels
#
Title
Year
Goodreads
Amazon
1
Subterranean
1999
2
Excavation
2000
3
Deep Fathom
2001
4
Amazonia
2002
5
Ice Hunt
2003
6
Indiana Jones and the Kingdom of the Crystal Skull