Normally, I was sceptical enough, but on this night of the full moon as I stood there at the window, the horrors which Colonel Menendez had related to us grew very real in my eyes, and I thought that the mysteries of Voodoo might conceal strange and ghastly truths, “The scientific employment of darkness against light.” Colin Camber’s words leapt unbidden to my mind; and, such is the magic of moonlight, they became invested with a new and a deeper significance. Strange, that theories which one rejects whilst the sun is shining should assume a spectral shape in the light of the moon. Such were my musings, when suddenly I heard a faint sound as of footsteps crunching upon gravel. I leaned farther out of the window, listening intently. I could not believe that Harley would be guilty of such an indiscretion as this, yet who else could be walking upon the path below? As I watched, craning from the window, a tall figure appeared, and, slowly crossing the gravel path, descended the moss-grown steps to the Tudor garden. It was Colonel Menendez! He was bare-headed, but fully dressed as I had seen him in the smoking-room; and not yet grasping the portent of his appearance at that hour, but merely wondering why he had not yet retired, I continued to watch him. As I did so, something in his gait, something unnatural in his movements, caught hold of my mind with a sudden great conviction. He had reached the path which led to the sun-dial, and with short, queer, ataxic steps was proceeding in its direction, a striking figure in the brilliant moonlight which touched his gray hair with a silvery sheen. His unnatural, automatic movements told their own story. He was walking in his sleep! Could it be in obedience to the call of M’kombo? My throat grew dry and I knew not how to act. Unwillingly it seemed, with ever-halting steps, the figure moved onward. I could see that his fists were tightly clenched and that he held his head rigidly upright. All horrors, real and imaginary, which I had ever experienced, culminated in the moment when I saw this man of inflexible character, I could have sworn of indomitable will, moving like a puppet under the influence of some unnameable force. He was almost come to the sun-dial when I determined to cry out. Then, remembering the shock experienced by a suddenly awakened somnambulist, and remembering that the Chinese ladder hung from the window at my feet, I changed my mind. Checking the cry upon my lips, I got astride of the window ledge, and began to grope for the bamboo rungs beneath me. I had found the first of these, and, turning, had begun to descend, when: “Knox! Knox!” came softly from the opening in the box hedge, “what the devil are you about?” It was Paul Harley returned from his tour of the building. “Harley!” I whispered, descending, “quick! the Colonel has just gone into the Tudor garden!”