On a deserted footpath, early on the morning of 22nd, 1983, a hospital worker witnessed a terrible sight. It would be the first case in the world where DNA evidence helped find the killer.

Naurboro, England, a quiet little village of about 6,000 residents, where violent crime is almost unheard of. It is something you expect to happen in a city,

not in a small village community.

15-year-old Linda Mann was a typical teenager,

quiet but popular, she liked school, and enjoyed being with friends.

On a cold November evening, Linda left her home in Narborough to walk the mile or so to her friend's house.

When Linda didn't return home by midnight, her frantic parents called the police.

Early the next morning, her semi-nude body was discovered along a secluded footpath known locally as the Black Pad.

Detective David Baker was called to the scene.

Her clothing was in the state of disarray, her jeans removed, and her underclothes was strewn

about.

It was a cold night and she'd got her a scarf around the neck

and the scarf had been used to strangle her. She was very brutally attacked, sexually assaulted.

Word of Linda's murder traveled quickly in the otherwise quiet village. The people were horrified.

I'm very worried, particularly those with young girls, young daughters.

A search of the crime scene turned up little of substance, but the autopsy provided some

important clues about Linda Mann's last moments alive.

The absence of injury to her private parts and also, generally on her body, there was very little injury to her, would suggest that it was not a violent attack and that she may have died very quickly.

The conclusion was that she was strangled and then raped.

A seaman sample taken from Linda's body turned out to be an extremely important

piece of evidence. It came from an individual with type A blood and a PGM1 plus enzyme profile,

but this matched 10% of the adult male population in England. Since Linda Mann's body was found

...