Freeman Wills Crofts, The Cask — Chapter 20 (1920)
“ Nearly every one he had interviewed had known at least something, if not always exactly what he wanted. He thought how many thousands of persons crossed the Channel each week whose journey it would be absolutely impossible to trace, and here, in the one instance that mattered, he had found a man who had been able to give him the very information he needed. Had Felix not gone in the bus, had Mr. Gordon not been so observant, had the circumstances not fallen out precisely as they did, he might never have ascertained the knowledge of Felix’s movements that day. ”
