Pop Idol Will Young last night made an emotional appeal for information about missing schoolgirl Milly Dowler.
His plea, at the request of Surrey Police, came on the eighth day of the investigation into her disappearance.
Police are becoming increasingly desperate in the absence of any solid clues.
Despite receiving more than 250 calls following an appeal on the television programme Crimewatch UK, investigators are still struggling for leads.
Young was chosen to make the appeal because 13-year- old Milly was a big fan.
But hopes that she might turn up safe and well have been fading for days.
Milly was last seen at 4.05pm on March 21.
Forensic detectives have scoured Milly's home in Waltonon-Thames, Surrey, where she lived with her parents, Bob and Sally, and sister Gemma, 16, but police insisted none of the family was a suspect.
Two builders who have been working on an extension to the £300,000 house are to be interviewed, but a police spokesman said they were not suspected of any involvement.