A pensioner's bank cards were used on a two-day shopping spree after she handed them over to an uninvited caller.
A woman knocked on the 83-year-old's door and said she needed to see the cards, police have said.
The pensioner, from Wallington, handed them over alongside her Pin, but then lost £3,000 when the cards were used in shops in Croydon.
Officers believe a second person may have been waiting outside the woman's home when the uninvited visit was made on September 6 or 7.
The cards were used on September 8 and 9.
Police have released these images of two people they would like to speak to in connection with the spree.
Anyone with information should call Sutton police on 101 quoting reference 4009724/15, or Crimestoppers anonymously on 0800 555 111.
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