During dinner the manner of the doctor had been all that was natural and spontaneous, though it was impossible for me, knowing him as I did, not to be aware that he was subconsciously very keenly alert and already receiving upon the ultra-sensitive surface of his mind various and vivid impressions; and there was now something in the gravity of his face, as well as in the significant tone of Colonel Wragge’s speech, and something, too, in the fact that we three were shut away in this private chamber about to listen to things probably strange, and certainly mysterious⁠—something in all this that touched my imagination sharply and sent an undeniable thrill along my nerves. Taking the chair indicated by my host, I lit my cigar and waited for the opening of the attack, fully conscious that we were now too far gone in the adventure to admit of withdrawal, and wondering a little anxiously where it was going to lead.