Mike Hammer was the detective in his books. Hammer's first book debuted in 1947. In it he sought the killer of a wartime buddy and gave himself the role of judge, jury,and executioner. The title of that book was I, The Jury.
In 1950 My Gun is Quick after Mike chat's up a beautiful redhead she's a victim of a hit and run. He goes to the authorities and insists "Red" was murdered. When they don't listen he goes after the killer. The shocking last line to the book was, "He was still screaming when I pulled the trigger."
Have you read any of Mickey Spillane's work? If so, which ones? What do you like about his mysteries?