Theres a serial killer on your country and the police didn't catch him yet, it means he's free

Its night and as you get ready to sleep, you could feel like someone is watching you. When you look at the window, you see a masked man all dressed in black, watching you. The man stares at you, not saying anything and not moving. It's very disturbing. He's holding a bloody knife on his hand and his clothes are covered in blood too.