From Wikipedia, the free encyclopedia. John Katzenbach (born 23 June 1950) is a U.S. author of popular fiction. Son of Nicholas Katzenbach, former United States Attorney General, John worked as a criminal court reporter for the Miami Herald and Miami News , and a featured writer for the Herald’s Tropic magazine. He is married to Madeleine Blais and they live in western Massachusetts. Description above from the Wikipedia article John Katzenbach, licensed under CC-BY-SA, full list of contributors on Wikipedia.