G. B. Grant, ''The Black Cat'' (1916)
“ First you say you are Kenally, when I know you are Kimbarton, then you want to sell me those letters you have there for a thousand dollars when I don't know whether they're the ones I want or not." He held out his hand. "Give them to me. If they are what you say they are, you'll get your money immediately. Come!" He looked expectantly at the detective, still holding out his hand; and, after a moment's hesitation, Kimbarton placed the letters in it. Rapidly Van Der Cynck ran through them, his lips relaxing into a faint smile as he gathered the import of them. ”
