I turned on the radio at random as I was driving home from PG's yesterday. Desert Island Discs was on. Here's a link (available for 27 days). The guest was Professor Angela Gallop, a forensic scientist.
In 1999 Angela and her team investigated the murder of Lynette White who was killed in her flat in Cardiff in 1988. Five men had been tried for her death and three - known as the ‘the Cardiff Three’ - were sent to prison although their convictions were quashed by the Court of Appeal two years later. Angela’s investigation made history when the murderer was identified and convicted through his familial DNA.
I know all about the Cardiff Three, having been in school with John Actie. Her discussion of that case is about 30 minutes in. She says that she met John after helping to identify the real killer and that she finds the "dignity with which he has dealt with the whole thing awe-inspiring."
Chapter 20 of her book When the Dogs Don't Bark: A Forensic Scientist's Search for the Truth is called Lynette White. That may be worth a read.