This strange thing happened to me just a few weeks ago. I was staying at my sisters, I had been there about three weeks because I was watching her son while she was in a summer program for college. She was in classes all day and often had to stay late to work on projects. That night she called me and said that she would be really late because she was going to have a cram session with her classmates for a big test the next day.
It was about 6:30 when I first saw something strange. I went into my nephew's room to get him a clean shirt because he had spilled juice on the one he was wearing while eating dinner. I was looking through his chest of drawers when I noticed a shadow outside the window just to my right. It looked like the shadow of a man it was still but after I looked at it for a second it walked off to the left. It scared me so I stuck my face against the window to look for someone off to the left in the yard but I did not see anybody. I decided it must have been someone walking down the street. The house was only 20 or 30 yards from the street so it was reasonable but it was weird that I had not been able to see the person out there, just his shadow.
Around 11 o'clock I had let my nephew fall asleep on the couch because I was still a little freaked out worrying that someone had been trying to look in his window. I went to close the curtains in the living room when I saw the shadow again this time standing beside a tree in the yard looking towards the house. It looked extra creepy because there was a little bit of fog in the yard and he seemed to be standing in it up to his ankles. I was really scared now so I called my sister's neighbor who she and her husband were good friends with. I told him I thought I had seen someone hanging out in the yard and asked if he would come take a look around. A few minutes later he knocked on the door and said he had looked carefully around the house and did not find anyone or any footprints or anything. We decided it had probably been someone on the street who stopped for a second and I was just letting my imagination run wild. He went home and I felt a little bit better that he had not seen anything out of place, but I kept checking out the window anyway.
I did not see anything but when I looked out around midnight the fog had gotten really thick and deep and the thing that really weirded me out about it was that it seemed contained in our yard. There wasn't a hint of fog on the street or in any of the other yards I could see. Then suddenly I heard the front door rattling like someone was trying to get in but it was locked. I hoped it was my sister but when I moved to the window beside the door I could see that nobody was there even though the door kept rattling. I just kind of yelled GO AWAY! And it got quiet.
I did not know what to do so I just went and sat on the couch by my nephew. I heard a loud bang on the window beside me. I moved the curtain a tiny bit so I could peek out the window and the shadow was right there very close to the window. I was nearly crying and I could not decide if I should try to take my nephew to another room of the house or what. Then I noticed that fog was starting to seep in under the door. I don't know why the fog scared me so much but I felt like if it got in the house the shadow would too. I grabbed a blanket off the back of a chair and smushed it against the bottom of the door. I stood back to see if that would stop it but it started to come in over the blanket and the door began to rattle again.
I ran to the kitchen and grabbed some sea salt and started pouring it at the doorstop all over the blanket. My nephew had woken up and was whimpering and looking at the door. I tried to sound normal and tell him it was ok. When I got a fair amount of salt down I said YOU CAN'T COME IN THIS HOUSE! The rattling stopped and the fog disappeared. I ran over to the window and saw that the fog was moving down the street. I did not see the shadow anywhere. I got my nephew back to sleep and a little while later my sister got home. I told her what had happened and asked if she had ever seen the shadow before. She said that she had never seen anything strange at her house and that there hadn't been any fog when she pulled in.
The next day we bought more sea salt and poured it all around the outside of her house and then all around the border of her yard. I did not see anything else the whole time I was there and my sister says nothing has happened since I left. I just want to know what it was if the fog was with the shadow.