Everybody in St. Mary Mead knew Miss Marple; fluffy and dithery in appearance, but inwardly as sharp and as shrewd as they make them.
Agatha Christie, 4:50 from Paddington
Miss Marple
Miss Marple is a white-haired old lady with a gentle, appealing manner — Miss Wetherby is a mixture of vinegar and gush. Of the two, Miss Marple is much the more dangerous.
Agatha Christie, The Murder at the Vicarage