The Scarlet Empire
 John Walker is a young American socialist, active and dedicated. Yet his personal poverty, and the slow progress of his cause, leave him despondent. In a fit of depression he decides on suicide by drowning: he hurls himself off "the long pier...called the Suicides' Promenade" at Coney Island. He loses consciousness&mdash;but is revived by a man in a strange diving suit; Walker at first mistakes him for a kind of fish/man. In fact, the man is a surgeon engaged in research; he explains to Walker that they are in Atlantis, at the bottom of the sea, and gives the American a cursory explanation of the nature of Atlantean society. (He cannot say much; Atlanteans are limited to a thousand words of speech per day, as measured by the "verbometers" they wear.) Socialist literature found in Walker's pockets suggests to the Atlantean authorities that Walker might be acceptable to their regime. (A few other Americans have penetrated to Atlantis in the past, though no one from the Earth's surface is there when Walker arrives.) The American is assigned to a barracks; the doctor who serves it is appointed his guide in all things Atlantean (and is given a dispensation to speak more than 1000 words per day). Together, the surgeon and the doctor become Walker's closest companions in his new life. The people of the domed city dress in red; their buildings, and even the cigars they smoke, are of the same color, giving their society its nickname, the Scarlet Empire. At first, Walker (or Citizen No. 489 ADG, as he is designated) is delighted to have awakened in a socialist state; but his enthusiasm quickly fades as he experiences the capricious irrationality and the privations of life in a dictatorship of the proletariat. He soon learns that his guide, the doctor, shares his repulsion from Atlantean life. Walker meets, and quickly falls in love with, a beautiful young woman, No. 7891 OCD; since she has no name, he comes to call her Astraea&mdash;"the last goddess of heaven to visit the earth". Yet he is shocked to learn that his new love is condemned as an "atavar" (from "atavism"), a reactionary individualist, a dissenter who cannot or will not conform to the dictates of society. As such, she is confined to an insane asylum (another anticipation of Soviet times). Atavars are given chances to conform; the recalcitrant ones are fed to a kraken outside the dome of Atlantis, in a ceremony reminiscent of the Christian sacrifices in the Colosseum of ancient Rome. The plot quickly resolves into Walker's struggle to rescue Astraea and escape back to the surface. The Atlanteans keep all they recover from the surface world in their Hall of Curiosities; its contents include everything from ships' figureheads and waterlogged books to enormous heaps of jewels and gold coins. In his research work, the surgeon comes into possession of a sunken miniature submarine; Walker and the doctor decide to use the vessel to escape. Their plan reaches a crisis when Walker is caught consorting with the imprisoned Astraea; the two are sentenced to be devoured by the kraken. Yet the hero and his friends manage a suspenseful getaway from the Atlanteans. Walker, Astraea, the doctor and the surgeon depart in their (treasure-laden) submarine; in a confrontation with the attacking kraken, they fire a torpedo, which kills the monster and also punctures the dome of Atlantis, destroying the city. Walker and friends reach dry land. With the advantage of enormous wealth (the appropriated Atlantean treasure), they manage to make their way through the individualistic capitalist world. The surgeon and doctor distinguish themselves in science and medicine; Astraea and Walker enjoy a long happy marriage. After her eventual death, Walker writes the story of their adventure.