Police are searching for a man who's been repeatedly ringing a doorbell on Thursdays.
Officers have released CCTV footage of the unidentified person on one of his visits to a home in London Road, Stroud.
The unknown male has been ringing the bell between 2am and 4 am, at least three times a month, and some nights he comes back more than once.
In a Neighbourhood Alert, PCSO Wood said: "This is causing a lot of alarm and distress to the victim.”
A Gloucestershire Police spokesperson added: “A member of the public approached their local Neighbourhood Engagement Vehicle and reported that an unknown man had been ringing their doorbell in the night then walking away.
“They reported that these incidents have gone on at their home address at London Road, Stroud, for a number of months and sometimes multiple times in one night.
“Police are appealing for the public’s help to identify the man who’s been photographed by the electronic doorbell.”
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