Arthur: The plans weren't imediately obvious to the eye, were they?
Prosser: That depends on where you were looking.
Arthur: I eventually had to go down to the cellar...
Prosser: That's the display department.
Arthur: ...with a torch.
Prosser: Ah, the lights had probably gone.
Arthur: So had the stairs.
Prosser: But you found the notice, didn't you?
Arthur: Yes. It was on display at the bottom of a locked filing cabinet stuck in a disused lavatory with a sign on the door saying "Beware of the Leopard." Ever thought of going into advertising?
