James Rollins, born James Paul Czajkowski in 1961, is an American author known for his action-adventure, mystery, and techno-thriller novels. Before becoming a full-time writer, he practiced veterinary medicine in Sacramento, California, a career he pursued for twenty years. His background as an amateur spelunker and certified scuba diver significantly influences his writing, with many stories set in subterranean or underwater environments. Rollins also published fantasy novels under the pseudonym James Clemens. His early inspirations include pulp fiction like Doc Savage, as well as historical accounts and classic adventure literature, which he blended with elements of "magic, mayhem, and monsters" to craft his contemporary thrillers.

Rollins' novels are characterized by their blend of action, adventure, and scientific intrigue, often incorporating elements of mystery and the unknown. His personal experiences, particularly his involvement in spelunking and scuba diving, frequently provide settings and plot points for his stories, which often explore hidden underground or underwater locations. He has cited authors like Edgar Rice Burroughs and Jules Verne as influences, aiming to create modern narratives that echo the spirit of classic adventure tales. Rollins also draws inspiration from historical discoveries, such as Howard Carter's excavation of Tutankhamun's tomb, which directly informed his novel 'Excavation'.

For two decades, James Rollins balanced his passion for writing with his career as a veterinarian. He owned a practice in Sacramento, California, managing a staff of twenty-four employees and working demanding hours. Rollins described his veterinary work as significantly more challenging than writing, noting the extensive time commitment that allowed for very limited vacation. He began writing during his lunch breaks at the clinic, finding that the practice of writing became more flexible over time, allowing him to transition to a full-time authorial career where he could write in diverse environments.

A recurring theme in Rollins' work involves the convergence of ancient mysteries and cutting-edge science, often leading to world-altering discoveries or threats. His 'Sigma Force' series, for instance, centers on a specialized unit within DARPA that investigates dangerous scientific phenomena with potential national security implications. These novels frequently delve into lost civilizations, unexplained biological anomalies, and technological advancements that blur the lines between science and the seemingly impossible. His standalone novels also explore similar territory, such as deep-sea exploration yielding secrets of ancient powers or the discovery of mutated creatures with heightened intelligence.

“For 20 years my paycheck was coming from my veterinary degree and my writing was my hobby, and I thought it would be really cool to flip that around.”

“Veterinary medicine is much harder.”

“It's a 14-, 16-, 18-hour-a-day job.”

“I owned my own practice, had 24 employees.”

“I couldn't get away, that was the biggest thing.”