After a phone is left behind at the scene of a minor car crash in Cardiff, police go on to unravel a huge drugs conspiracy. And we go into the Crimewatch archives to see how the cold-hearted killer of Tati Rogers was eventually caught thanks to an elaborate double bluff set by the police in Wrexham.
When a man confesses that a woman is lying dead in his house, police must establish whether she died as a result of an accident or if she was murdered. There is also a look into the Crimewatch archives. Detectives and forensic experts describe how Pembrokeshire killer John Cooper was finally found guilty of murder, decades after he committed his crimes. Advances in forensic technology finally helped police crack these two infamous double murder cases.
The cat-and-mouse chase to bust a gang who enrolled at Swansea university in order to sell drugs to students. Plus a twisted case of revenge. Why did a man who was attacked with a machete in Cardiff refuse to cooperate with the police? When a shooting happens on the streets, detectives finally find a link, but, bizarrely, it takes a visit to the x-ray department of the local hospital to finally find the unusual hiding place for the gun.