You swear you closed the door and checked to see it was locked before you left. Yet we get back and the glass screen is closed but the door is wide open. But none of our luggage has been disturbed or anything else. So somebody took the time and broke in and never bothered to look through our stuff? If you forgot then say you forgot. It happens. I did that once and fortunately my good neighbors shut my door. Don't tell me maybe the wind blew a locked door open through a glass screen.