Английский язык — Strugatsky B.

Anton is an undercover operative from future Earth, who travels to an alien world whose culture has not progressed beyond the Middle Ages. Although in possession of far more advanced knowledge than the society around him, he is forbidden to interfere with the natural progress of history. His place is to observe rather than interfere - but can he remain aloof in the face of so much cruelty and injustice ...?

It is a mysterious city whose sun is switched on in the morning and switched off at night, bordered by an abyss on one side and an impossibly high wall on the other. Its inhabitants are people who were plucked from twentieth-century history at various times and places and left to govern themselves, advised by Mentors whose purpose seems inscrutable. This is life in the Experiment. Andrei Voronin, a young astronomer plucked from Leningrad in the 1950s, is a die-hard believer in the Experiment,...