Claimed

From the flaps of the Avalon edition: "It was in the first decade of the twentieth century that the British merchant sailing ship, Portsmouth Belle, was thrown off her course by undersea volcanic convulsions, and entered an area of floating scoria and ashes. For three days the vessel plowed through this area, her best speed being three knots despite a fair breeze, with all canvas set; and on the second day, an island was sighted. The Portsmouth Belle's instruments had been affected in some way by the seismic disturbances; it was not possible to estimate her location by other than dead reckoning. If this was correct, there should be no island here. And all the appearances, as the ship approached, were of an area of land thrown up recently by volcanic action. It was, in fact, a mass of dark, chocolate-colored rock, striated with metallic red, all coated with ashes. Some of the ash had been washed away by rain since the upheaval, and the rock, in the distance, gave the appearance of ruins. Indeed, the captain of the Portsmouth Belle thought, these might be the remains of some ancient city. They were too far away to investigate under the circumstances. A landing indicated many hot, ill-smelling fissures, from which poisonous vapors might be coming. Captain Charles Jessamy and Seaman James Blair were the only ones to set foot, briefly, on the island; and Blair asked the skipper's permission to carry away a keepsake. Scattered about the surface were many irregular blocks and ball-shaped masses of greenish-black lava. One of the smaller blocks had a very regular rectangular shape; the lava was deep-green in color, flecked with brilliant scales of matallic scarlet. Jessamy gave Seaman Blair permission to take it away and keep it. The Portsmouth Belle was lost before returning to port, but Blair and the others aboard were saved. By that time, in attempting to saw the block open, Blair discovered a great casket inside. He concealed it from the others. And the events which followed were such that, in terror, he sold the casket to a curio-shop dealer. Thus it passed into the hands of the fabulously wealthy Jesse Robinson, whose creed was, "What I want, I get - and what I get, I keep." And with Robinson's keeping of the box, despite Blair's attempt to warn him and urge him to sell it back, the terror passed to the Robinson household, to his niece, Leilah, and to young John Vanaman, M.D., whom Leilah summoned to look after her uncle. For some being, some thing, claimed this box; and whatever the being was, it had tremendous powers of illusion. Night after night, sitting beside old Robinson, Dr. Vanaman heard the surge of the sea, saw the waves emerge under closed doors and flood the room, and soon found that this was only the beginning of the manifestation. What was the secret of the box, of a substance which no one could identify? What was the writing on the box, the symbols which seemed to be on whatever side one turned it, then to sink down into the middle of the box? Why did the owner of the curio ship, who had had the box for a short time, suddenly disappear with a large sum of money, then reappear, obviously insane, leading a blooded white horse, which he had purchased for several thousand dollars? What did he mean by his ravings about the "archangel"?"