Though at death's door, I nearly cheered at this revival of Sherlock Holmes's strength. Indeed, his sharp eyes flashed like gemstones and all the outstanding aspects of his physiognomy: his fierce hawk-like nose, his determined chin, and his noble brow, seemed even more prominent and revealing of the greatness of the man. It was as if he had undergone transfiguration.

'Hah! Do I detect a note of defiance? Foolish. Foolish,' jeered Moriarty, shaking his long forefinger as if admonishing a child. 'Do you think that just because you have recovered your memory and some of your old occult powers, you can stand up to me? Have you forgotten the Great Stone of Power? Not even the combined strength of the College of the Occult Sciences, and all the Grand Masters, living and dead, could withstand its immense power. So how do you think you can stop me? It is beyond your capability to resist even an iota of its energy. Try!'

A ripple of movement flowed out of his eyes and, striking the stone, emerged as a kind of invisible wave of destructive energy that shot out towards Holmes and the two Lamas. Sherlock Holmes raised his hands and – as if he had been doing it all his life (which, in a manner of speaking, he probably had) – moved his fingers in a strange manner to form tantric gestures (Skt. mudra). Immediately, a barely visible barrier, a kind of curtain of shimmering energy, seemed to form before them. The force wave smashed into the psychic shield with the noise of a thunderclap. Holmes and the two Lamas were thrown to the ground; but they gradually rose to their feet, and it was apparent that, though shaken, they were happily unharmed.

'Good, Holmes, good,' crowed Moriarty, 'but not quite good enough, if you will forgive me the remark. You have obviously not applied yourself with sufficient diligence to the teachings of our old Master. The little finger should have unfolded like the petals of the Utpala [45] flower after the first rain, not hung hesitantly like a eunuch's lingam. So shall we try again?'

Again and again Moriarty attacked with the awesome power of the Stone, and again and again Sherlock Holmes threw up his psychic shield to protect the lamas and himself from annihilation. But it was tragically obvious that Moriarty was toying with Holmes and was – as he himself had earlier declared – using only a fraction of his power. Standing tall and erect, shining with vitality, he casually directed the murderous waves of energy at a rapidly weakening Sherlock Holmes.

Tears filled my eyes at the realisation that my noble friend was doomed, and with him the Grand Lama and the Lama Yonten; and then, of course, Thibet, that fascinating country to whose study I had devoted these many years of my life. Was it all to end in this manner? With myself lying useless and dying on the floor of this cold cavern, while Moriarty strutted about, brave as a cock on his own dung-hill, crowing his cock-a-doodle-doo of victory. It was hateful – intolerable. But what could I do? I could not even move. Or could I?'

Gritting my teeth I tried. I discovered that my entire body was useless and had no feelings nor functions, except for the right arm, which had retained some of its vitality – at least for the moment. Clawing the icy floor with my right hand I managed to slowly and painfully drag myself forward.

Moriarty had his back to me and was slowly advancing on Mr Holmes and the two Lamas, who were being flung further backwards in disarray after every shattering blow of the Power Stone. Oh, for my revolver! A weapon – anything. I looked about the cavern floor but could see nothing. Only my trusty old umbrella lay on the ice a littie away from me, where it must have fallen after I had been struck by the fire-ball. Moriarty now paused for a moment in his advance to make some more sneering, facetious remarks, that he obviously regarded as hilariously funny.

'Have you now had enough finger exercises, Holmes? I should really hope so, for I intend to make our next lesson a more difficult one. Now what shall it be? Ah! I have it. You'll love this one Holmes. In fact it'll warm the cockles of your heart. Ha. Ha. Ha.' As the cavern dome echoed once again with his laughter, a jet of multi-coloured fire shot forth from the Stone. 'Hell-fire, Holmes! Hell-fire! Ha. Ha.'

Only just in time Sherlock Holmes managed to make some occult gestures and raised his psychic shield before the flames struck – and engulfed it. For a moment I thought with despair that they had been consumed by the blaze. But then, through the raging flames, I was able to see that Mr Holmes and the lamas were safely ensconced within a dome of energy, and safe – at least for the present – while all round them raged this magical conflagration.

Gritting my teeth I managed to drag myself to where my umbrella lay – and secured it. What I was going to do with it I did not know, but I grimly dragged myself towards Moriarty. On reflection, I can really provide no explanation how my shattered, near lifeless body managed not to just give up and expire altogether, much less move forward in this fashion. It may have been the overriding hatred I felt for this evil, sneering blackguard, or even the great love and concern I felt for my companions, that provided me with the necessary inspiration and reserve of strength to go on.

Now, as I neared my nemesis, the fire increased in malevolent vigour and began to take on a demoniacal life of its own. Strange hellish creatures: imps, monsters, demons and witches flitted and danced about the flames, sniggering, cackling and screaming at my friends within their perilously vulnerable haven.

I struggled forward until I was just behind Moriarty. But then I realised that I had, all along, just been deceiving myself. There was no earthly possibility that I could raise myself to my feet and knock the villain smartly behind the head with my umbrella, as I had vaguely planned to do. It was a miracle in itself that I had managed to just drag myself up to this point using only my one fit arm. Tears of impotent rage and frustration coursed down my cheeks and dropped on the icy floor. Through my misted eyes I now saw my friends in their final death-struggle.

The flames had greatly increased in energy. Sherlock Holmes, exhausted and beaten, was now down on both knees, his left hand resting on the ground, supporting his spent body. But that unconquerable, valiant soul still managed to hold his right hand high, the fingers still forming the mudra of protection (Skt. raks mudra).

The hellish creatures were beside themselves with rage and anticipation of victory. Three grimacing imps jumped violently up and down on the energy dome. A black satanic creature with flaming eyes attacked its surface with a fierytrident, trying to prise it open like a tin of bully beef. A coven of witches tore at the sides with their sharp claws, screaming and cackling in gleeful expectation – as the dome visibly weakened under their combined attack. There were many other such foul creatures in this ferocious assault, but it was not possible to see everything clearly in the hellish confusion and raging flames.

The dark figure of Moriarty seemed to grow taller, more sinister and satanic as he prepared to deliver his death blow. 'Well, Holmes,' he shouted gleefully above the roar of the flames and the screaming of his filthy minions. 'I trust that age hath not withered nor custom staled my infinite variety. This is just a foretaste of where I am going to consign you and your friends – forever.'

He stepped back a pace to prepare his stroke – and stepped right on my extended hand. I nearly yelled with the pain, but fortunately managed to swallow the hurt and remain still. Then a strange feeling overcame me, and I beheld the finger of God in this littie incident.

'Goodbye, Holmes, everybody. Forever!'

Moriarty stepped forward. I clenched the end of my umbrella firmly and, whipping it forward, hooked the curved handle around his right ankle. Then, summoning the last remaining reserve of strength in my body, I pulled. For a moment Moriarty staggered backwards but then the fiill force of my pull caused his legs to flip back in the air and his torso to tumble forward. His arms instinctively extended forwards to break his fall – and he inadvertently released his hold on the Stone of Power.