John D. Voelker was an American author and attorney, best known for his novel "Anatomy of a Murder," published in 1958. The book, which explores themes of justice and morality, was inspired by a real-life murder case in Michigan. Voelker's writing is notable for its realistic portrayal of courtroom drama and legal intricacies. In addition to his literary career, Voelker served as a Michigan Supreme Court Justice. He was also an avid fisherman and wrote extensively about his love for the outdoors, contributing to the genre of outdoor literature. His works often reflect his deep appreciation for nature and the legal profession.