(1/2) All my housemates went home for the weekends. I locked the main door of the apartment (knob and chain lock, no one should get in even with keys) and went into the room to rest. That night, there was a sound in the common area. I pressed my ear against the room's door and someone was there, going through some stuff. I did not know what to do. After getting a grip of myself, I silently pulled my bed to block the door.