Anna Katharine Green (1846-1935) was a pioneering figure in the detective fiction genre, particularly known for her creation of the 'detective novel' in America. Born in Brooklyn, New York, Green published her first novel, 'The Leavenworth Case' (1878), to widespread acclaim, effectively founding the detective story's popularity in the United States. Her works are characterized by well-constructed plots and detailed character development. Green's stories often feature strong female characters, which was uncommon at the time, thereby defying the then prevalent gender norms. Her literary style combines elements of suspense, meticulous attention to detail, and an undercurrent of romance, setting the stage for the genre that would later catapult writers like Agatha Christie to fame. In her lifetime, Green wrote more than 40 books, and her collective works were featured in 'Detective Mysteries - Ultimate Collection: 48 Novels & Detective Tales in One Volume'. This extensive collection showcases Green's talent in weaving intricate narratives that captivate and engage readers. Beyond her most famous works, she penned several shorter stories and novelettes, all marked by her signature style that expertly blends the deductive reasoning of her sleuths with the moral and social issues of her time. Anna Katharine Green was not only a key figure in establishing the detective genre as a legitimate form of literature but also paved the way for female writers within the domain traditionally dominated by men.