" As usual, my friend, you speak without reflection. How do you know that the pearls Mrs. Opalsen locked up so carefully to-night were not the false ones, and that the real robbery did not take place at a much earlier date? "

― Agatha Christie , AGATHA CHRISTIE Collection : The Mysterious Affair at Styles, Poirot Investigates, The Murder on the Links, The Secret Adversary, The Man in the Brown Suit