Wilma June Nissen Homicide Wilma June Nissen 23 YOA Rock Rapids, Iowa Lyon County, Iowa Case Number: 78-06487 October 4, 1978   UPDATE Suspect sought in 1978 cold case murder of Wilma Nissen Lyon County Chief Deputy Jerry Birkey announced May 2, 2016, a major development in the 38-year-old cold case of Wilma June Nissen, […]