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Heart's helping Devon and Cornwall police uncover what they believe could be a burglar's code..
Symbols have been spotted near homes which police believe could be linked to crimes in the area.
There's no hard evidence yet and police say they aren't trying to scare people, but they do want to build up a library of the symbols so that they can be analysed.
DC Steve Fleetwood, who is based at Torquay police station, wants anyone who spots a strange sign near their house to contact their police officer or neighbourhood police team.
He's been talking to our reporter Wendy Buckingham CLICK HERE
You can contact Crimestoppers 0800 555 111 or police on 101