Freeman Wills Crofts, The Cask — Chapter 24 (1920)
“ Our defence must be that Boirac followed his wife to London and murdered her there. Now can we suggest possible details? He would arrive at his house on that Sunday morning and find his wife gone, and a letter from her saying she had eloped with Felix. What, then, would he do?”Clifford leaned forward to stir the fire.“I have thought over that,” he said somewhat hesitatingly, “and I have worked out a possible theory. It is, of course, pure guesswork, but it fits a number of the facts.”“Let’s hear it. Naturally our theories at present can only be guesswork.” ”
