Agatha Christie said this quote

Death, mademoiselle, unfortunately creates a prejudice. A prejudice in favour of the deceased. I heard what you said just now to my friend Hastings. ‘A nice bright girl with no men friends.’ You said that in mockery of the newspapers. And it is very true—when a young girl is dead, that is the kind of thing that is said. She was bright. She was happy. She was sweet-tempered. She had not a care in the world. She had no undesirable acquaintances. There is a great charity always to the dead. Do you know what I should like this minute? I should like to find someone who knew Elizabeth Barnard and who does not know she is dead! Then, perhaps, I should hear what is useful to me—the truth.