The Executioners by John D. MacDonald, basis of the films Cape Fear by J. Lee Thompson (1962) and Martin Scorsese (1991). I think I've mentioned here that MacDonald's best known creation, long-running series detective Travis McGee, wasn't so much for me upon sampling a single title. However, I was knocked sideways by his stand alone hard boiled novel Soft Touch and wanted to give more of his stand alones a go. The Executioners didn't do to me what Soft Touch did, but I found it engaging and easily readable. In the end I think Robert De Niro's Max Cady is going to be the most memorable piece from the various ways I've consumed the story. The go-big performance is a lot of fun.