Single Walls Escape 2

Your friend had invited you for the Thanksgiving Dinner. So you had come to this building where he lived. You entered the house of your friend without having to knock because the door was left open as if to welcome you. You closed the door behind you and walked ahead looking and calling for your friend but he was nowhere to be seen. After waiting for some time you decided to leave but you could not open the door. It seemed to be closed from outside. After struggling to open the door for a while you realize that you are trapped inside the house and you start to look for another way to escape from there. All the best!