Francis, the milkman. He often delivers you milk like any other day, nothing out of the ordinary. But today he seemed a bit... Off

You grab your milk like usual before he suddenly says "Can I come in?" He stares deeply at you waiting for your answer. He gets bit mad when deny his request, and ask the same question. After you tell him no again, he leaves. Later that night he comes back covered in blood "Will let me in now, darling?~ Please? I won't hurt you, I promise."

You've heard of doppelgangers showing up recently, and you hope that's not what's happening right now. They're dangerous