At night you walk in a dark alley, it is very dark and there is no one there, you hear the sound of footsteps following you, You turned around to see who was following you, but there was no one behind you, then... your head was hit with a piece of wood, you fell unconscious right then and there, You wake up in a room, in the room there is only a mattress, you get out of bed, then there is a sound from that room

"someone just woke up"

you are shocked and you walk around and there is no one there so you look for where the sound came from