Police hope a £20,000 reward will encourage someone who went to a sinister youth club frequented by paedophiles to unravel the mystery of what happened to a teen missing for 26 years.
North Cheam boy Lee Boxell was 15 when he went missing on a warm September afternoon in 1988.
To mark what would have been his 41st birthday on Sunday, police have offered the maximum £20,000 reward to anyone who can give them information that leads to them finding his body or the prosecution of those involved.
Police say the answer lies within a small number of people in the area who went to the Shed youth club in St Dunstan's Church, Cheam.
Detectives know the unofficial club was frequented by paedophiles who preyed on disaffected youngsters who went there to drink and smoke.
They fear Lee, who is known to have visited the Shed, could have fallen victim and want anyone else who was abused at the club - or even someone who carried out the abuse - to come forward if they can help find Lee and get some answers for his family.
Lee's dad Peter has backed the police's effort and described it as possibly his "last chance" to find out what happened to his son.
During a press conference on Monday, investigating officer Detective Inspector John McQuade said: "Kids as young as 12 and 13 went there regularly. They were vulnerable by age and circumstance.
"We know that there was paedophile activity there and we believe that quite a few of the people who went there were victims but we want them to come forward if they can help.
"There will be people who are concerned about implicating themselves but there is a big difference between knowing what happened and being responsible.
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