Donal MacIntyre: Unsolved is a British crime reality series in which investigative journalist and self-proclaimed criminologist Donal MacIntyre investigates a number of well noted "cold cases", for which the police have never been able to reach a conclusion. Working alongside a self-assembled cold case team, MacIntyre revisits each case by re-interviewing witnesses, investigating officers and reviewing physical evidence in the hope that "fresh eyes" can release new information and possible theories, which could lead to closure for the family and friends of each of the victims. The series began broadcasting on CBS Reality on 11 October 2015. A total of ten episodes have been broadcast to date.