I was upstairs, and went to open the window when I see a man walking out of my house (out of my front garden). I watched him from the window and he didn't go into anyone else's house, and left our street.
I thought it was really odd as he wasn't a Royal Mail postman or anything, but I went downstairs to check whether he had put anything through our letterbox. Nothing there. I opened the door to see if anything he had put in the letterbox had fallen out- again, nothing.
Can anyone think of a logical explanation (I have anxiety) or is this really dodgy?