But even so, there was no conclusive evidence of any criminal act.  The patient might be a confirmed opium-eater, and the symptoms heightened by deliberate deception.  The cunning of these unfortunates is proverbial and is only equalled by their secretiveness and mendacity.  It would be quite possible for this man to feign profound stupor so long as he was watched, and then, when left alone for a few minutes, to nip out of bed and help himself from some secret store of the drug.  This would be quite in character with his objection to seeing a doctor and his desire for secrecy.  But still, I did not believe it to be the true explanation.  In spite of all the various alternative possibilities, my suspicions came back to Mr. Weiss and the strange, taciturn woman, and refused to budge.

For all the circumstances of the case were suspicious.  The elaborate preparations implied by the state of the carriage in which I was travelling; the make-shift appearance of the house; the absence of ordinary domestic servants, although a coachman was kept; the evident desire of Mr. Weiss and the woman to avoid thorough inspection of their persons; and, above all, the fact that the former had told me a deliberate lie.  For he had lied, beyond all doubt.  His statement as to the almost continuous stupor was absolutely irreconcilable with his other statement as to the patient’s wilfulness and obstinacy and even more irreconcilable with the deep and comparatively fresh marks of the spectacles on the patient’s nose.  That man had certainly worn spectacles within twenty-four hours, which he would hardly have done if he had been in a state bordering on coma.

My reflections were interrupted by the stopping of the carriage.  The door was unlocked and thrown open, and I emerged from my dark and stuffy prison opposite my own house.

“I will let you have the medicine in a minute or two,” I said to the coachman; and, as I let myself in with my latch-key, my mind came back swiftly from the general circumstances of the case to the very critical condition of the patient.  Already I was regretting that I had not taken more energetic measures to rouse him and restore his flagging vitality; for it would be a terrible thing if he should take a turn for the worse and die before the coachman returned with the remedies.  Spurred on by this alarming thought, I made up the medicines quickly and carried the hastily wrapped bottles out to the man, whom I found standing by the horse’s head.

“Get back as quickly as you can,” I said, “and tell Mr. Weiss to lose no time in giving the patient the draught in the small bottle.  The directions are on the labels.”

The coachman took the packages from me without reply, climbed to his seat, touched the horse with his whip and drove off at a rapid pace towards Newington Butts.