I was letting the cat out via the window (flat, no cat flap) & was wearing a baggy t-shirt & knickers, as it's lovely hot day. Low window so you might be able to see I was only in that. Anyway, as I was shutting window a guy walked past, did a double take & stopped, staring. I put blinds back down & thought nothing of it. 5mins later the front doorbell went. I didn't answer, thinking it was prob for next door . Then a knock on my window, so I found my shorts & answered door. It was same guy. He said 'is this Carol's house'? I said no & hurriedly shut door. I'm worried now as the 2 other flats keep leaving the main door on the latch despite discussions re safety . I do have a fake CC TV camera by my window but still feel rattled. I've seen him since, walking up the other side of the road, so bit worried i'll come across him again. He's built like a tank & well over 6feet so hard to miss: & he obv wasn't bothered by the CC TV stuff. What was he thinking knocking on a strange woman's door?