Dream of

I am in my house, although not always the same house, and I am scared. I know that something bad is coming after me, sometimes I see the thing coming and sometimes I just sense it. I quickly try to lock the door, but the door, regardless of how many times I try, won't lock. I start running and try to hide, sometimes I get out the house but keep running, but inevitably the thing always finds me and then I wake up.