Dallas William Mayr, better known by his pen name Jack Ketchum, was an American horror fiction author. He was the recipient of four Bram Stoker Awards and three further nominations. His novels included Off Season, Offspring, and Red, the latter two of which were adapted to film. In 2011, Ketchum received the World Horror Convention Grand Master Award for his outstanding contribution to the horror genre.

A onetime actor, teacher, literary agent, lumber salesman, and soda jerk, Ketchum credited his childhood love of Elvis Presley, dinosaurs, and horror for getting him through his formative years. He began making up stories at a young age and explained that he spent much time in his room, or in the woods near his house, down by the brook.