James Paul Czajkowski, 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' 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).

A novelization is a derivative novel that adapts the story of a work created for another medium, such as a film, TV series, stage play, comic book, or video game. Film novelizations were particularly popular before the advent of home video, but continue to find commercial success as part of marketing campaigns for major films. They are often written by accomplished writers based on an early draft of the film's script and on a tight deadline.