"According to the woman's account, the patient was her mother, who had met with a street accident a week before. She gave the name of the consultant who had been called in, and who, she stated, had advised the opinion of Sir Baldwin. She represented that the matter was urgent, and that it might be necessary to perform an operation immediately in order to save the patient's life."

"But surely," I interrupted, in surprise, "Sir Baldwin did not take his instruments?"

"He took his case with him--yes," replied Logan; "for he in turn yielded to the appeals of the visitor. The very last words that I heard him speak as he left the house were to a.s.sure her that no such operation could be undertaken at such short notice in that way."

Logan paused, looking around at us a little wearily.

"And what aroused your suspicions?" said Smith.

"My suspicions were aroused at the very moment of Sir Baldwin's departure, for as I came out onto the steps with him I noticed a singular thing."

"And that was?" snapped Smith.

"Directly Sir Baldwin had entered the cab the woman got out," replied Logan with some excitement in his manner, "and reclosing the door took her seat beside the driver of the vehicle--which immediately moved off."

Nayland Smith glanced significantly at me.

"The cab trick again, Petrie!" he said; "scarcely a doubt of it." Then, to Logan: "Anything else?"

"This," replied the secretary: "I thought, although I could not be sure, that the face of Sir Baldwin peered out of the window for a moment as the cab moved away from the house, and that there was strange expression upon it, almost a look of horror. But of course as there was no light in the cab and the only illumination was that from the open door, I could not be sure."

"And now tell Mr. Smith," said Weymouth, "how you got confirmation of your fears."

"I felt very uneasy in my mind," continued Logan, "for the whole thing was so irregular, and I could not rid my memory of the idea of Sir Baldwin's face looking out from the cab window. Therefore I rang up the consultant whose name our visitor had mentioned."

"Yes?" cried Smith eagerly.

"He knew nothing whatever of the matter," said Logan, "and had no such case upon his books! That of course put me in a dreadful state of mind, but I was naturally anxious to avoid making a fool of myself and therefore I waited for some hours before mentioning my suspicions to any one. But when the morning came and no message was received I determined to communicate with Scotland Yard. The rest of the mystery it is for you, gentlemen, to unravel."

CHAPTER XVI

I TRACK ZARMI

"What does it mean?" said Nayland Smith wearily, looking at me through the haze of tobacco smoke which lay between us. "A well-known man like Sir Baldwin Frazer is decoyed away--undoubtedly by the woman Zarmi; and up to the present moment not so much as a trace of him can be found. It is mortifying to think that with all the facilities of New Scotland Yard at our disposal we cannot trace that d.a.m.nable cab! We cannot find the headquarters of the group--we cannot _move!_ To sit here inactive whilst Sir Baldwin Frazer--G.o.d knows for what purpose!-- is perhaps being smuggled out of the country, is maddening--maddening!"

Then, glancing quickly across to me: "To think ..."

I rose from my chair, head averted. A tragedy had befallen me which completely overshadowed all other affairs, great and small. Indeed, its poignancy was not yet come to its most acute stage; the news was too recent for that. It had numbed my mind; dulled the pulsing life within me.

The s.s._Nicobar_, of the Oriental Navigation Line, had arrived at Tilbury at the scheduled time. My heart leaping joyously in my bosom, I had hurried on board to meet Karamaneh....

I have sustained some cruel blows in my life; but I can state with candor that this which now befell me was by far the greatest and the most crushing I had ever been called upon to bear; a calamity dwarfing all others which I could imagine.

She had left the ship at Southampton--and had vanished completely.

"Poor old Petrie," said Smith, and clapped his hands upon my shoulders in his impulsive sympathetic way. "Don't give up hope! We are not going to be beaten!"

"Smith," I interrupted bitterly, "what chance have we? what chance have we? We know no more than a child unborn where these people have their hiding-place, and we haven't a shadow of a clue to guide us to it."

His hands resting upon my shoulders and his gray eyes looking straightly into mine.

"I can only repeat, old man," said my friend, "don't abandon hope. I must leave you for an hour or so, and, when I return, possibly I may have some news."

For long enough after Smith's departure I sat there, companioned only by wretched reflections; then, further inaction seemed impossible; to move, to be up and doing, to be seeking, questing, became an imperative necessity. m.u.f.fled in a heavy traveling coat I went out into the wet and dismal night, having no other plan in mind than that of walking on through the rain-swept streets, on and always on, in an attempt, vain enough, to escape from the deadly thoughts that pursued me.

Without having the slightest idea that I had done so, I must have walked along the Strand, crossed Trafalgar Square, proceeded up the Haymarket to Piccadilly Circus, and commenced to trudge along at the Oriental rugs displayed in Messrs. Liberty's window, when an incident aroused me from the apathy of sorrow in which I was sunken.

"Tell the cab feller to drive to the north side of Wandsworth Common,"

said a woman's voice--a voice speaking in broken English, a voice which electrified me, had me alert and watchful in a moment.

I turned, as the speaker, entering a taxi-cab that was drawn up by the pavement, gave these directions to the door-porter, who with open umbrella was in attendance. Just one glimpse I had of her as she stepped into the cab, but it was sufficient. Indeed, the voice had been sufficient; but that sinuous shape and that lithe swaying movement of the hips removed all doubt.

It was Zarmi!

As the cab moved off I ran out into the middle of the road, where there was a rank, and sprang into the first taxi waiting there.

"Follow the cab ahead!" I cried to the man, my voice quivering with excitement. "Look! you can see the number! There can be no mistake. But don't lose it for your life! It's worth a sovereign to you!"

The man, warming to my mood, cranked his engine rapidly and sprang to the wheel. I was wild with excitement now, and fearful lest the cab ahead should have disappeared; but fortune seemingly was with me for once, and I was not twenty yards behind when Zarmi's cab turned the first corner ahead. Through the gloomy street, which appeared to be populated solely by streaming umbrellas, we went. I could scarcely keep my seat; every nerve in my body seemed to be dancing--twitching.

Eternally I was peering ahead; and when, leaving the well-lighted West End thoroughfares, we came to the comparatively gloomy streets of the suburbs, a hundred times I thought we had lost the track. But always in the pool of light cast by some friendly lamp, I would see the quarry again speeding on before us.

At a lonely spot bordering the common the vehicle which contained Zarmi stopped. I s.n.a.t.c.hed up the speaking-tube.

"Drive on," I cried, "and pull up somewhere beyond! Not too far!"

The man obeyed, and presently I found myself standing in what was now become a steady downpour, looking back at the headlights of the other cab. I gave the driver his promised reward.

"Wait for ten minutes," I directed; "then if I have not returned, you need wait no longer."

I strode along the muddy, unpaved path, to the spot where the cab, now discharged, was being slowly backed away into the road. The figure of Zarmi, unmistakable by reason of the lithe carriage, was crossing in the direction of a path which seemingly led across the common. I followed at a discreet distance. Realizing the tremendous potentialities of this rencontre I seemed to rise to the occasion; my brain became alert and clear; every faculty was at its brightest. And I felt serenely confident of my ability to make the most of the situation.

Zarmi went on and on along the lonely path. Not another pedestrian was in sight, and the rain walled in the pair of us. Where comfort-loving humanity sought shelter from the inclement weather, we two moved out there in the storm, linked by a common enmity.

I have said that my every faculty was keen, and have spoken of my confidence in my own alertness. My condition, as a matter of fact, must have been otherwise, and this belief in my powers merely symptomatic of the fever which consumed me; for, as I was to learn, I had failed to take the first elementary precaution necessary in such case. I, who tracked another, had not counted upon being tracked myself! ...

A bag or sack, reeking of some sickly perfume, was dropped silently, accurately, over my head from behind; it was drawn closely about my throat. One m.u.f.fled shriek, strangely compound of fear and execration, I uttered. I was stifling, choking ... I staggered--and fell....

CHAPTER XVII

I MEET DR. FU-MANCHU

My next impression was of a splitting headache, which, as memory remounted its throne, brought up a train of recollections. I found myself to be seated upon a heavy wooden bench set flat against a wall, which was covered with a kind of straw matting. My hands were firmly tied behind me. In the first agony of that reawakening I became aware of two things.