Mickey Spillane's Mike Hammer is a fictional private detective created by author Mickey Spillane. First appearing in the 1947 novel "I, the Jury," Hammer is known for his tough demeanor, hard-boiled attitude, and a strong sense of justice. The character often operates outside the law, using violence and intimidation to solve cases. Mike Hammer became a cultural icon, appearing in numerous novels, films, and television adaptations. The stories typically feature gritty crime plots, reflecting the post-World War II era's anxieties. Spillane's writing style is characterized by its directness and action-oriented narrative, making Hammer a staple of the noir genre.