In a rear vestry room beside the apse Blake found a rotting desk and ceiling-high shelves of mildewed, disintegrating books. Here for the first time he received a positive shock of objective horror, for the titles of those books told him much. They were the black, forbidden things which most sane people have never even heard of, or have heard of only in furtive, timorous whispers; the banned and dreaded repositories of equivocal secret and immemorial formulae which have trickled down the stream of time from the days of man's youth, and the dim, fabulous days before man was. He had himself read many of them—a Latin version of the abhorred Necronomicon, the sinister Liber Ivonis, the infamous Cultes des Goules of Comte d'Erlette, the Unaussprechlichen Kulten of von Junzt, and old Ludvig Prinn's hellish De Vermis Mysteriis. But there were others he had known merely by reputation or not at all—the Pnakotic Manuscripts, the Book of Dzyan, and a crumbling volume of wholly unidentifiable characters yet with certain symbols and diagrams shudderingly recognizable to the occult student. Clearly, the lingering local rumours had not lied. This place had once been the seat of an evil older than mankind and wider than the known universe.