Books like The unforsaken Hiero by Sterling E. Lanier

Per Hiero Desteen appears alone, helpless, and without supplies in a harsh desert five thousand years after the holocaust known as The Death. Sent south to infiltrate the Brotherhood of the Unclean—a force determined to destroy the emerging northern civilization—he gains favor as the son‑in‑law of the King of D’alway. Yet his welcome ends in betrayal: his wife and all he loves are taken, and the psychic abilities that had helped him thwart the Unclean’s tricks are stripped away by drugs. With his mind numbed, he is compelled to head north, hoping for help, while a mysterious creature beckons him toward an unknowable encounter. The narrative follows Hiero’s desperate attempt to navigate a world rebuilt from ashes, confronting betrayal, loss of power, and the looming threat of a secretive evil that has survived centuries.

First publish date: 1983