Quiet Please Nothing Behind the Door

 There's a little house on stilts at the top of Mt. Wilson, protected by a barbed wire fence. There's a sign on the fence that reads "the public is forbidden to pass beyond this fence under severe penalty." It doesn't state exactly what the severe penalty is, or who or what will administer it.

Three men visit the astronomical observatory next to the house. They plan to rob a bank, and decide that because of the warning and the fence protecting the apparently empty house, it'd be the perfect place to hide the money. When they ask what's in the house they're told there's nothing in it. They find out for themselves how true that is.