Salesman Elmer Gentry is an attractive man and an immoral adventurer. Having accidentally found himself at a meeting of believers, and realizing that under the guise of a church one can make good money, Gentry immediately turns into an evangelist. Teaming up with Sister Sharon Faulconer, he delivers passionate exorcism sermons that bring him fame and fortune. But when his ex-girlfriend appears, Gentry has to confront demons of a different nature and seemingly long-buried secrets turn his “holy” life into a true Hell on Earth. (Sinclair Lewis, according to Heinlein, is the only non-fiction writer to whom he owes experience. “A carefully developed, thoughtful, detailed world that lives its own life, which is not always written out in the work, but allows the characters to live completely naturally - Lewis’s books taught him this...” - A. Korzhenevsky.)