A child helped steal a purse from an elderly Camberley woman last week.
The child, aged about eight, and a teenager called at her home in Queen Mary Avenue and asked to use her toilet.
Once inside, the youth went upstairs while the toddler tricked the pensioner into fetching a glass of water from the kitchen.
After the pair had left, their victim, who is in her 80s, discovered they had dipped into her handbag and stolen her purse.
It is believed the purse contained only a small amount of money together with some personal papers.
The youth is described as aged 14-15, of medium build and about 5ft 4in tall. He had short light brown hair and was wearing a dark coloured coat.
His accomplice was about 4ft tall and wearing an anorak with a cream coloured hood covering his or her head.
A police spokeswoman described it as a "mean theft", and said the youngsters had taken advantage of a vulnerable woman.
She hoped the incident would serve as a warning to residents not to allow strangers into their homes.
"They should also always ask for proof of identity if the callers say they are from utility companies such as gas and electricity," she added.
Anyone who saw the two youngsters acting suspiciously in Queen Mary Avenue at about 3.30p on February 28, when the theft happened, is asked to contact DC Nick Pinkerton on 0845 125 2222.