Diana Cosby is an American historical and paranormal romance novelist, primarily known for her extensive and internationally bestselling series. Cosby’s writing style is characterized by its blend of romantic elements with suspenseful storylines and often incorporates paranormal themes, particularly within the MacGruder Brothers series. Her novels frequently delve into complex relationships and dramatic conflicts set against historical backdrops, appealing to fans of romantic suspense.
Cosby has established herself as a prolific author, boasting a large catalog of books and series. She is particularly recognized for her "MacGruder Brothers" series, which has garnered significant international acclaim, and her "Forbidden" series, a long-running historical romance series. She also contributes to anthologies and actively engages with charitable causes, such as the Habitat for Humanity Build A Habitat for Humanity Home Challenge.









