David Hagberg (1942-2019) was an American novelist best known for his techno-thrillers, particularly the Kirk McGarvey series. He began his writing career with pulp-style novels, including collaborations on the Nick Carter: Killmaster series, demonstrating a fast-paced, action-oriented style. Hagberg also authored novels based on popular franchises like Flash Gordon and Terminator, and occasionally wrote as Sean Flannery. He was known for his prolific output and ability to craft suspenseful narratives often incorporating espionage and military themes.

































































































































































































































































































































