Michael Griesbach is a veteran prosecutor in the state of Wisconsin where the events recounted in his book occurred. He wrote The Innocent Killer as a challenge to the system. He 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. He worked on the case to overturn Steven Avery's original rape conviction and has reviewed all of the evidence in the Teresa Halbach case, to produce a work of non-fiction that will make you think again. He lives in North Eastern Wisconsin with his wife Jody and their four children.