When I was 9 or 10 I was laying in my bed wish was next to my (open) window, I was about to fall asleep when I heard inconsistent foot steps like someone had a limp, I thought it was my dad as he had a tendency to to get up at night and have a smoke and he also had a limp from a football injury so I brushed it off when I heard it again I started to wonder what it was and when it got closer to my window and stopped I freaked out and slipped under my blankets after maybe 5/6 minutes the noise moved away from my window it kept going on for an hour or two. The next morning I asked my parents if they went for a walk last night neither of them did, when I told them what happened they shot each-other a terrified look and told me to keep my window locked from then on