Board Thread:Fun and Games/@comment-29585050-20161122101745/@comment-27398195-20161123085321

You have a store room which has a padlock that can be locked without using a key, but it needs a key to be opened and you are the only one who have the key. One day, you decided to move all unused things onto the store room. After you set all things neatly, you lock the door and walk out of the store room. The next morning, you find that a dead body is inside the store room.

Since there is no duplicate of your key and you live alone, the police suspects you as the culprit. You can't understand anything when suddenly an idea strikes on your mind. There is a possible way of which the body is placed there by someone else.

What I think it could be:

It wasn't a murder, it was a suicide. The person was in one of boxes, hiding there. When you left the room, he opened the box, stepped out, closed the box and killed himself.

