Michael Griesbach is a prosecuting attorney in the Wisconsin county where the Steve Avery case events occurred. He wrote The Innocent Killer to challenge the system, to find out if we still believe in the long-cherished principle of American jurisprudence: "It’s better to let one hundred guilty persons go free than it is to convict one who is innocent." Griesbach hopes to leave readers better informed about the inner workings of the criminal justice system and more concerned about those whose lives it deeply affects.