A surprise when shopping

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Hhhmmmmmm, I would have sat in the car park until she left then followed her (at a safe distance obviously) to see what she was up to. Might just be a newby, but it does sound a bit sinister.

Definitely keep an eye out for the car again, and maybe watch what you put out in your bins for a bit. Keep the tin lady sweet, from my dealings with the little old ladies that run shops like that if you're nice to 'em an stay for a chat you can pick up a lot of intel. Nowt better than a nosey neighbour (as long as they're not your neighbour!)