Texas Drifter
Two women in two separate towns in Texas who where raped. The rapist uses a knife to threaten these women then rapes them and leaves his DNA behind. Back when these happened DNA was not profected yet so having the DNA was useless. Many years later when CODIS was developed which is a database for DNA a match to the rapists DNA was found. It was to a known serial rapist.
Fingerprint File
It was two days before Christmas a woman if found stabbed to death with the only clue left is a fingerprint left on a pop bottle. The forensic people were able to lift the print but had no success in matching it to anybody. Years later a man still working on cold cases finds a match to the fingerpprint which gives the police a lead to a killer.
Rose Among Thorns
Juliet Rowe was the victim who got shot in the bedroom of her English Countryside home. She was shot execution style then was shot again in the heart. The killer wanted to make sure that Juliet was dead. After thousands of endless attempts her case remained unsolved.
8 years later a stranger comes into a pub and starts talking to Mr Rowe Juliet's husband. The stranger's name was Keith Rose. He was arrested on kidnapping charges 6 weeks later. Because of his arrest he brings attention to himself to the cold case investigators who then look at him in the "Rose Among Thorns" case.