“When we stopped at Riderhood’s, and he asked that scoundrel a question or two, purporting to refer only to the lodging-houses in which there was accommodation for us, had I the least suspicion of him? None. Certainly none until afterwards when I held the clue. I think he must have got from Riderhood in a paper, the drug, or whatever it was, that afterwards stupefied me, but I am far from sure. All I felt safe in charging on him tonight, was old companionship in villainy between them. Their undisguised intimacy, and the character I now know Riderhood to bear, made that not at all adventurous. But I am not clear about the drug. Thinking out the circumstances on which I found my suspicion, they are only two. One: I remember his changing a small folded paper from one pocket to another, after we came out, which he had not touched before. Two: I now know Riderhood to have been previously taken up for being concerned in the robbery of an unlucky seaman, to whom some such poison had been given.