On November 1st, 1907, there had come to New Orleans police a frantic summons from the swamp and lagoon country to the south. The squatters there, mostly primitive but good-natured descendants of Lafitte's men, were in the grip of stark terror from an unknown thing which had stolen upon them in the night. It was voodoo, apparently, but voodoo of a more terrible sort than they had ever known; and some of their women and children had disappeared since the malevolent tom-tom had begun its incessant beating far within the black haunted woods where no dweller ventured. There were insane shouts and harrowing screams, soul-chilling chants and dancing devil-flames; and, the frightened messenger added, the people could stand it no more. So a body of twenty police, filling two carriages and an automobile, had set out in the late afternoon with the shivering squatter as a guide. At the end of the passable road they alighted, and for miles splashed on in silence through the terrible cypress woods where day never came. Ugly roots and malignant hanging nooses of Spanish moss beset them, and now and then a pile of dank stones or fragments of a rotting wall intensified by its hint of morbid habitation a depression which every malformed tree and every fungous islet combined to create. At length the squatter settlement, a miserable huddle of huts, hove in sight; and hysterical dwellers ran out to cluster around the group of bobbing lanterns. The muffled beat of tom-toms was now faintly audible far, far ahead; and a curdling shriek came at infrequent intervals when the wind shifted. A reddish glare, too, seemed to filter through the pale undergrowth beyond endless avenues of forest night. Reluctant even to be left alone again, each one of the cowed squatters refused point-blank to advance another inch toward the scene of unholy worship, so Inspector Legrasse and his nineteen colleagues plunged on unguided into black arcades of horror that none of them had ever trod before. The region now entered by the police was one of traditionally evil repute, substantially unknown and untraversed by white men. There were legends of a hidden lake unglimpsed by mortal sight, in which dwelt a huge, formless white polypous thing with luminous eyes; and squatters whispered that bat-winged devils flew up out of caverns in inner earth to worship it at midnight. They said it had been there before D'Iberville, before La Salle, before the Indians, and before even the wholesome beasts and birds of the woods. It was nightmare itself, and to see it was to die. But it made men dream, and so they knew enough to keep away. The present voodoo orgy was, indeed, on the merest fringe of this abhorred area, but that location was bad enough; hence perhaps the very place of the worship had terrified the squatters more than the shocking sounds and incidents.