Mark Daly investigates whether an innocent man is in prison wrongly convicted as a serial killer. Scots nurse Colin Norris, dubbed the Angel of Death, is serving a minimum of 30 years in prison for the murder of four elderly patients and the attempted murder of a fifth. It was a case that captivated the nation. And despite protesting his innocence, Norris was convicted in 2008 after a jury found him guilty of poisoning patients in two Leeds hospitals with insulin.
But new evidence to be revealed by BBC Scotland Investigates casts serious doubt on his convictions, and could pave the way for him to be set free. Reporter Mark Daly revives the style and spirit of the old BBC Rough Justice strand, by critically examining the main components of the case against Norris, and dismantling them one by one. The investigation reveals new scientific research from world-renowned experts which suggests Glaswegian Norris is innocent, and that his alleged victims could have died from natural causes.