Very odd. Yes, it does look like someone wearing a grey hoodie and black trousers, but as you have said there was no-one fitting that description in your other pictures, it is indeed very strange.
My late aunt lived in a very old house which had strange happenings in it. Things like coat hangers would suddenly be flung from the third floor and crash in a heap in the ground floor hall. They once had some pictures developed (in the days of wet film) and found some odd ones of the village church spire, which they knew they haddn't taken. It ended up with specialists coming to visit, and they deduced that the only place those photo's could have been taken from would have been up on the roof, next to the chimney! As Auntie and Uncle were frail and in their 80's, and their house was three storeys tall, there was no-one living there who would have had the courage to scramble across the steep roof to reach the chimney!
I have several other things like this which have happened in our family, so we must simply put things like this in the category of 'Seriously weird'! 2231 days ago