In the end of the movie a man is in an empty room of an empty house (no furniture, paintings), he opens a little trap door in the middle of floor of the room he is in, he enters the trap door, he closes it, and then closing credits.
It's a trapdoor just like this one:
I really didn't watch the movie, but that ending has stuck with me all those years (five or more).
The man seemed a little depressed. Sorry but I don't have no more info. Can you tell me what movie or TV-show this is?