Prologue

The moon had risen above the rim of the canyon near the headwaters of the Little Colorado. It bathed in soft light the willows that line the bank of the little mountain torrent and the cottonwood trees beneath which stood the tiny cabin where I had been camping for a few weeks in the White Mountains of Arizona.

I stood upon the little porch of the cabin enjoying the soft beauties of this Arizona night; and as I contemplated the peace and serenity of the scene, it did not seem possible that but a few years before the fierce and terrible Geronimo had stood in this same spot before this self-same cabin, or that generations before that this seemingly deserted canyon had been peopled by a race now extinct.

I had been seeking in their ruined cities for the secret of their genesis and the even stranger secret of their extinction. How I wished that those crumbling lava cliffs might speak and tell me of all that they had witnessed since they poured out in a molten stream from the cold and silent cones that dot the mesa land beyond the canyon.

My thoughts returned again to Geronimo and his fierce Apache warriors; and these vagrant musings engendered memories of Captain John Carter of Virginia, whose dead body had lain for ten long years in some forgotten cave in the mountains not far south of this very spot--the cave in which he had sought shelter from pursuing Apaches.

My eyes, following the pathway of my thoughts, searched the heavens until they rested upon the red eye of Mars shining there in the blue-black void; and so it was that Mars was uppermost in my mind as I turned into my cabin and prepared for a good night's rest beneath the rustling leaves of the cottonwoods, with whose soft and soothing lullaby was mingled the rippling and the gurgling of the waters of the Little Colorado.

I was not sleepy; and so, after I had undressed, I arranged a kerosene lamp near the head of my bunk and settled myself for the enjoyment of a gangster story of assassination and kidnaping.

My cabin consists of two rooms. The smaller back room is my bedroom. The larger room in front of it serves all other purposes, being dining room, kitchen, and living room combined. From my bunk, I cannot see directly into the front room. A flimsy partition separates the bedroom from the living room. It consists of rough-hewn boards that in the process of shrinking have left wide cracks in the wall, and in addition to this the door between the two rooms is seldom closed; so that while I could not see into the adjoining room, I could hear anything that might go on within it.

I do not know that I am more susceptible to suggestion than the average man; but the fact remains that murder, mystery, and gangster stories always seem more vivid when I read them alone in the stilly watches of the night.

I had just reached the point in the story where an assassin was creeping upon the victim of kidnappers when I heard the front door of my cabin open and close and, distinctly, the clank of metal upon metal.

Now, insofar as I knew, there was no one other than myself camped upon the headwaters of the Little Colorado; and certainly no one who had the right to enter my cabin without knocking.

I sat up in my bunk and reached under my pillow for the .45 Colt automatic that I keep there.

The oil lamp faintly illuminated my bedroom, but its main strength was concentrated upon me. The outer room was in darkness, as I could see by leaning from my bunk and peering through the doorway.

"Who's there?" I demanded, releasing the safety catch on my automatic and sliding my feet out of bed to the floor. Then, without waiting for a reply, I blew out the lamp.

A low laugh came from the adjoining room. "It is a good thing your wall is full of cracks," said a deep voice, "or otherwise I might have stumbled into trouble. That is a mean-looking gun I saw before you blew out your lamp."

The voice was familiar, but I could not definitely place it. "Who are you?" I demanded.

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