In her twenties, Belle da Costa Greene is hired by J. P. Morgan to curate a collection of rare manuscripts, books, and artwork for his newly built Pierpont Morgan Library. Belle becomes a fixture in New York City society and one of the most powerful people in the art and book world, known for her impeccable taste and shrewd negotiating for critical works as she helps create a world-class collection.

After the loss of her mother and her own battle with breast cancer, Joanna Teale returns to her graduate research on nesting birds in rural Illinois, determined to prove that her recent hardships have not broken her. She throws herself into her work from dusk to dawn, until her solitary routine is disrupted by the appearance of a mysterious child who shows up at her cabin barefoot and covered in bruises. The girl calls herself Ursa, and she claims to have been sent from the stars to witness five miracles.

Esme is born into a world of words. Motherless and irrepressibly curious, she spends her childhood in the Scriptorium, an Oxford garden shed in which her father and a team of dedicated lexicographers are collecting words for the very first Oxford English Dictionary. Young Esme’s place is beneath the sorting table, unseen and unheard. One day a slip of paper containing the word bondmaid flutters beneath the table. She rescues the slip and, learning that the word means “slave girl,” begins to collect other words discarded or neglected by the dictionary men.

August 1939: London is dismal under the weight of impending war with Germany as Hitler’s forces continue to sweep across Europe. Into this uncertain maelstrom steps Grace Bennett, young and ready for a fresh start in the bustling city streets she’s always dreamed of - and miles away from her troubled past in the countryside. With aspirations of working at a department store, Grace never imagined she’d wind up employed at Primrose Hill, an offbeat bookshop nestled in the heart of the city - after all, she’s never been much of a reader.

Tig Costello has arrived in Darren, Kentucky, commissioned to paint a portrait honoring her grandfather Benjamin. His contributions to the rural Appalachian town and his unimpeachable war service have made him a local hero. But to Tig, he’s a relative stranger. To find out more about him, Tig wants to talk to the person who knew her grandfather best: Eloise Price, the woman who murdered him fifty years ago.