JAMES ROLLINS is the New York Times bestselling author of international thrillers, translated into more than forty languages. His Sigma series has been lauded as one of the “top crowd pleasers” (New York Times) and one of the “hottest summer reads” (People Magazine). In each novel, acclaimed for its originality, Rollins unveils unseen worlds, scientific breakthroughs, and historical secrets–and he does it all at breakneck speed and with stunning insight.

James Paul Czajkowski (born August 20, 1961), better known by his pen name of James Rollins, is an American veterinarian and writer of action-adventure/thriller, mystery, and techno-thriller novels who gave up his veterinary practice in Sacramento, California to be a full-time author.

Rollins attended Parkway South Junior High School and then graduated from Parkway West High School in Ballwin, Missouri, in 1979. His undergraduate work focused on evolutionary biology. He graduated from the University of Missouri in Columbia in 1985 with a doctorate in veterinary medicine (D. V. M). Soon afterward, he moved to Sacramento, California, where he established his veterinary practice

James Rollins‘ experiences and expertise as an amateur spelunker and a certified scuba diver have provided content for some of his novels, which are often set in underground or underwater locations. Under the pen name James Clemens, he has also published fantasy novels, such as Wit’ch Fire, Wit’ch Storm, Wit’ch War, Wit’ch Gate, Wit’ch Star, Shadowfall (2005), and Hinterland (2006).