Sibling comments have made their point. I'll just add: “But the book was on the shelf…” “On the shelf? I eventually had to go down to the cellar to find it.”

Sibling comments have made their point. I'll just add: “But the book was on the shelf…” “On the shelf? I eventually had to go down to the cellar to find it.” “That’s the display department.” “With a flashlight.” “Ah, well, the lights had probably gone.” “So had the stairs.” “But look, you found the book, didn’t you?” “Yes,” said Arthur, “yes I did. It was on a shelf in the bottom of a locked filing cabinet stuck in a disused lavatory with a sign on the door saying ‘Beware of the Leopard.”