Police methods are varied and ingenious. Malone, through unostentatious rambles, carefully casual conversations, well-timed offers of hip-pocket liquor, and judicious dialogues with frightened prisoners, learned many isolated facts about the movement whose aspect had become so menacing. The newcomers were indeed Kurds, but of a dialect obscure and puzzling to exact philology. Such of them as worked lived mostly as dock-hands and unlicenced pedlars, though frequently serving in Greek restaurants and tending corner news stands. Most of them, however, had no visible means of support; and were obviously connected with underworld pursuits, of which smuggling and 'bootlegging' were the least indescribable. They had come in steamships, apparently tramp freighters, and had been unloaded by stealth on moonless nights in rowboats which stole under a certain wharf and followed a hidden canal to a secret subterranean pool beneath a house. This wharf, canal, and house Malone could not locate, for the memories of his informants were exceedingly confused, while their speech was to a great extent beyond even the ablest interpreters; nor could he gain any real data on the reasons for their systematic importation. They were reticent about the exact spot from which they had come, and were never sufficiently off guard to reveal the agencies which had sought them out and directed their course. Indeed, they developed something like acute fright when asked the reasons for their presence. Gangsters of other breeds were equally taciturn, and the most that could be gathered was that some god or great priesthood had promised them unheard-of powers and supernatural glories and rulerships in a strange land.
The attendance of both newcomers and old gangsters at Suydam's closely guarded nocturnal meetings was very regular, and the police soon learned that the erstwhile recluse had leased additional flats to accommodate such guests as knew his password; at last occupying three entire houses and permanently harbouring many of his queer companions. He spent but little time now at his Flatbush home, apparently going and coming only to obtain and return books; and his face and manner had attained an appalling pitch of wildness. Malone twice interviewed him, but was each time brusquely repulsed. He knew nothing, he said, of any mysterious plots or movements; and had no idea how the Kurds could have entered or what they wanted. His business was to study undisturbed the folklore of all the immigrants of the district; a business with which policemen had no legitimate concern. Malone mentioned his admiration for Suydam's old brochure on the Kabbalah and other myths, but the old man's softening was only momentary. He sensed an intrusion, and rebuffed his visitor in no uncertain way; till Malone withdrew disgusted, and turned to other channels of information.
What Malone would have unearthed could he have worked continuously on the case, we shall never know. As it was, a stupid conflict between city and Federal authority suspended the investigations for several months, during which the detective was busy with other assignments. But at no time did he lose interest, or fail to stand amazed at what began to happen to Robert Suydam. Just at the time when a wave of kidnappings and disappearances spread its excitement over New York, the unkempt scholar embarked upon a metamorphosis as startling as it was absurd. One day he was seen near Borough Hall with clean-shaved face, well-trimmed hair, and tastefully immaculate attire, and on every day thereafter some obscure improvement was noticed in him. He maintained his new fastidiousness without interruption, added to it an unwonted sparkle of eye and crispness of speech, and began little by little to shed the corpulence which had so long deformed him. Now frequently taken for less than his age, he acquired an elasticity of step and buoyancy of demeanour to match the new tradition, and shewed a curious darkening of the hair which somehow did not suggest dye. As the months passed, he commenced to dress less and less conservatively, and finally astonished his new friends by renovating and redecorating his Flatbush mansion, which he threw open in a series of receptions, summoning all the acquaintances he could remember, and extending a special welcome to the fully forgiven relatives who had so lately sought his restraint. Some attended through curiosity, others through duty; but all were suddenly charmed by the dawning grace and urbanity of the former hermit. He had, he asserted, accomplished most of his allotted work; and having just inherited some property from a half-forgotten European friend, was about to spend his remaining years in a brighter second youth which ease, care, and diet had made possible to him. Less and less was he seen at Red Hook, and more and more did he move in the society to which he was born. Policemen noted a tendency of the gangsters to congregate at the old stone church and dance-hall instead of at the basement flat in Parker Place, though the latter and its recent annexes still overflowed with noxious life.
Then two incidents occurred—wide enough apart, but both of intense interest in the case as Malone envisaged it. One was a quiet announcement in the Eagle of Robert Suydam's engagement to Miss Cornelia Gerritsen of Bayside, a young woman of excellent position, and distantly related to the elderly bridegroom-elect; whilst the other was a raid on the dance-hall church by city police, after a report that the face of a kidnapped child had been seen for a second at one of the basement windows. Malone had participated in this raid, and studied the place with much care when inside. Nothing was found—in fact, the building was entirely deserted when visited—but the sensitive Celt was vaguely disturbed by many things about the interior. There were crudely painted panels he did not like—panels which depicted sacred faces with peculiarly worldly and sardonic expressions, and which occasionally took liberties that even a layman's sense of decorum could scarcely countenance. Then, too, he did not relish the Greek inscription on the wall above the pulpit; an ancient incantation which he had once stumbled upon in Dublin college days, and which read, literally translated,

O friend and companion of night, thou who rejoicest in the baying of dogs and spilt blood, who wanderest in the midst of shades among the tombs, who longest for blood and bringest terror to mortals, Gorgo, Mormo, thousand-faced moon, look favourably on our sacrifices!

When he read this he shuddered, and thought vaguely of the cracked bass organ notes he fancied he had heard beneath the church on certain nights. He shuddered again at the rust around the rim of a metal basin which stood on the altar, and paused nervously when his nostrils seemed to detect a curious and ghastly stench from somewhere in the neighbourhood. That organ memory haunted him, and he explored the basement with particular assiduity before he left. The place was very hateful to him; yet after all, were the blasphemous panels and inscriptions more than mere crudities perpetrated by the ignorant?
By the time of Suydam's wedding the kidnapping epidemic had become a popular newspaper scandal. Most of the victims were young children of the lowest classes, but the increasing number of disappearances had worked up a sentiment of the strongest fury. Journals clamoured for action from the police, and once more the Butler Street Station sent its men over Red Hook for clues, discoveries, and criminals. Malone was glad to be on the trail again, and took pride in a raid on one of Suydam's Parker Place houses. There, indeed, no stolen child was found, despite the tales of screams and the red sash picked up in the areaway; but the paintings and rough inscriptions on the peeling walls of most of the rooms, and the primitive chemical laboratory in the attic, all helped to convince the detective that he was on the track of something tremendous. The paintings were appalling—hideous monsters of every shape and size, and parodies on human outlines which cannot be described. The writing was in red, and varied from Arabic to Greek, Roman, and Hebrew letters. Malone could not read much of it, but what he did decipher was portentous and cabbalistic enough. One frequently repeated motto was in a Sort of Hebraised Hellenistic Greek, and suggested the most terrible daemon-evocations of the Alexandrian decadence:

'HEL · HELOYM · SOTHER · EMMANVEL · SABAOTH · AGLA · TETRAGRAMMATON · AGYROS · OTHEOS · ISCHYROS · ATHANATOS · IEHOVA · VA · ADONAI · SADAY · HOMOVSION · MESSIAS · ESCHEREHEYE.'

Circles and pentagrams loomed on every hand, and told indubitably of the strange beliefs and aspirations of those who dwelt so squalidly here. In the cellar, however, the strangest thing was found—a pile of genuine gold ingots covered carelessly with a piece of burlap, and bearing upon their shining surfaces the same weird hieroglyphics which also adorned the walls. During the raid the police encountered only a passive resistance from the squinting Orientals that swarmed from every door. Finding nothing relevant, they had to leave all as it was; but the precinct captain wrote Suydam a note advising him to look closely to the character of his tenants and protégés in view of the growing public clamour.