Here's how I see it.. If you look at the image above, you'll see that the tile where the carpet would have been was a different color, and he had a fortune hid somewhere in the house... Add those two together and I'm thinking murder... Here's what I think happened. He's going in to check his fortune late at night for comfort and to admire what he's been able to do. Someone is watching at the window and sees him coming out, with mabye some money to pay bills and what not. They think, he's such an old man, and think of all the money that's in there. So the robber(s) starts making their move... I'm thinking there are 2 of them, one knocks on the door and he opens it; thinking it might be the girl again and when it's not he tries to close the door, they walk in and go over to the window and the robber lets the other one in. The old man realizes whats going on and takes the gun off of the rack. But the robber in the window is faster and shoots him while he's looking at robber 1, who is by the chair. He falls to the ground with a hole in his head and the 2 robbers go down and steal the money, the carpet is already pulled back so they don't have to worry about putting it back... This is my idea, some of it may seem farfeched but I'm not working with much. Also, the way that they shot him, with him holding a gun not looking at the window or door makes him look like he's comitting suicide...