The fantastic works of Lawrence James, published mainly in England, brought him success both in Europe and in the USA. The action of the novel “The Earth Slumbers” takes place as if in two dimensions - messengers from other civilizations find themselves on Earth, which, after nuclear and neutron wars, has returned to the era of feudalism. Cruel rulers oppress people, turning them into slaves. The heroes of the novel, Commander Simon Rusk and his friend Lieutenant Bogart - from the Galactic Security Service - are faced with a problem: how legitimate is their intervention in the course of human history?