Enlightenment is a dazzling new work of literary fiction from Sarah Perry, the acclaimed author of The Essex Serpent. This story of love and astronomy unfolds over the course of twenty years, following the lives of two improbable best friends, Thomas Hart and Grace Macaulay, who have spent their entire lives in the small Essex town of Aldleigh.

Despite the three-decade age difference, Thomas and Grace are kindred spirits, struggling with their commitment to religion and their yearning to explore the world beyond their small Baptist community. Their friendship faces a severe test as two romantic relationships cause a rift between them. Thomas develops an obsession with a vanished nineteenth-century astronomer rumored to haunt a nearby manor, while Grace escapes Aldleigh for London.

As the years pass, Thomas and Grace's lives are drawn back together, both by chance and by choice, as they unravel the mystery of the absent astronomer. This journey becomes a devastating tale of love and scientific pursuit, prompting them to question the nature of love, the constancy of the universe, the extent of fate's predestination, and whether they can find a path back to one another.

Enlightenment is a thrillingly ambitious novel, rich in symmetry and symbolism, and represents Sarah Perry's finest work to date. It is a story of friendship, faith, and unrequited love, inviting readers to ponder the immutable and the transient, and the written destiny in the stars.