Revolt in 2100 by Robert A. Heinlein

The book is part of Heinlein’s famous Future History series and anchors around the novella If This Goes On—. Set in a dystopian United States that has been transformed into a fundamentalist military theocracy, the story follows John Lyle, a member of the elite personal guard to the “Prophet Incarnate”. After falling in love with a handmaiden designated for the Prophet, Lyle is forced to question his indoctrination and joins an underground revolutionary movement to overthrow the regime from within.The volume also typically includes the shorter stories Coventry and Misfit, which explore the aftermath of the revolution and the rebuilding of a free society.