Police in Norfolk are using the video service Youtube in a bid to track down the killer of a woman 20 years ago.
16-year-old Natalie Pearman was found strangled on the outskirts of Norwich in November 1992. It's the first time the county's detectives have turned to Youtube in an attempt to solve a crime.
Det Chief Insp Andy Guy from the Norfolk and Suffolk Major Investigation Team has appealed for people to get in touch with any information.
It may be back in 1992 that you came by some information that led you to suspect who was responsible for Natalie's death. It may be that you were aware that someone was acting in an unusual manner, or perhaps it was just a rumour you heard. Please contact us now and let us know that information."
This appeal forms part of the team's cold case review of unsolved crimes.
Natalie was working as a prostitute in Norwich. She was last seen just over two hours before her body was discovered in woods at Ringland Hills.
"We have the DNA. All we need is a name," said Mr Guy.