This happened when I was 8, He was a neighbour. Very long story so will try to make it shorter! It also has a trigger warning below..
Started hearing noises in the attic, Told my mum about it but it was explained as house noises/pipes etc I still remember being wide awake in my bed hearing various bangs and noises.
This went on for weeks.
Got home one day and my mum went upstairs for something then shouted for me to get out of the house, She also ran out of the house, shut the front door behind her and ran to the neighbours house where she called the police.
Long story short another neighbour had been hiding in our attic for weeks, The reason my mum told me to get out of the house was because when she went upstairs she saw the attic door was open. We never went in the attic for anything so she noticed right away. We had clearly got home before he was expecting us to that day.
Police went up into the attic and found him there, He had a make shift bed made up, a blanket and a pillow, empty food wrappers and the worst thing for me was the small hole he had made through my bedroom ceiling so he could watch me at night when I was in bed (I can't sleep properly if I think about that part a lot)
Found out later he was hiding from the police because he had been TRIGGER WARNING sexually abusing his 8 year old son, Neighbour went to prison.
Also found out after the fact that said neighbour had been the local 'peeping tom' and would look through windows at night, exposing himself to women and children, and would also call people and heavy breathe down the phone etc and was well known as the local creep. He admitted to the police that he was going to take me away but obviously didn't get the chance.