" I suggest to you that, although you may have endeavored to gloss over the fact to yourself, you did deliberately set about taking your husband from your friend. I suggest that you felt strongly attracted to him at once. But I suggest that there was a moment when you hesitated, when you realized that there was a choice–that you could refrain or go on. I suggest that the initiative rested with you–not with Monsieur Doyle. … You had everything, Madame, that life can offer. Your friend’s life was bound up in one person. You knew that, but, though you hesitated, you did not hold your hand. You stretched it out and, like the rich man in the Bible, you took the poor man’s one ewe lamb. "

― Agatha Christie , Death on the Nile (Hercule Poirot, #16)