The silence of the lambs

You are a single mom living with a high paying job. You decide to take a break from the job and go on a vaction somewhere quiet. You decide two go to a national park and rent a One story cabin for the weekend. In the area that you were staying, there was a empty mental facility of which all the patients had escaped. You were unaware of the incedent and were just looking foward to get away from the city. One day while you were sleeping you hear a knock on the door you here a unidentified human come in the open door and started to come up the stairs.