Last night my parents went to a party, so I remained home alone. I couldn't sleep, so I decided to watch a movie. The house was so quiet, but suddenly I heard a knock in the door and I could see a silhouette through the door's window. I was very scared, so I shouted "Who is there?!", without receiving an answer. I went quietly to the door to see who is there. After I opened it, I noticed there was nobody. I ran scared in the bed where I slept until my parents returned home. It was such a scary night and I still don't know what or who was there..