The boy raised on planet Ark
Earth surveyors preparing the planet Ark for resettlement discover Pierre Semyonov, a human boy whose parents died when their ship crashed there when he was an infant, and who was kept alive and raised by the planet's never-seen natives. He returns to the humans' camp speaking in borrowed voices and moving with inhuman ability, drawn to them yet recoiling from any questions about his guardians. The contact team argues over whether to use him as a channel to the aliens, and the encounter ends with the natives, speaking through the boy, rejecting further contact.