An observer from outside the window

This story is based on my dream.

Pls dont take it seriously

I felt something cold on my leg,something like hand.I immediately started trying to cover myself with the blanket, thinking it was my younger sister's hand trying to wake me up to upset me...But something was odd.I opened my tired eyes,and I looked at my younger sister sleeping peacfully on the bed next to mine.I took a deep breath and I looked on the windows.I saw tall,slim black figure looking at me with dead white eyes. I was terryfied.After few minutes looking at eachother tall figure disappeared.But still,I was feeling watched.