Francesca is a 45-year-old Italian-born housewife living on a farm in Madison County, Iowa. Originally from Naples, she holds a degree in comparative literature and briefly worked as a teacher before marrying an American sailor and settling down. While she dutifully cares for her household, she harbors quiet yearnings for the artistic and cultural passions she left behind in Europe. The arrival of a stranger looking for directions suddenly disrupts her highly predictable routine.

Robert is a 52-year-old professional photographer on assignment for a geographic magazine. A divorced, solitary traveler who calls himself one of the last cowboys, he spends his life roaming the globe to capture striking images. He is deeply devoted to his craft and prefers a lean, disciplined existence over modern comforts, traveling continuously in his old truck named Harry.

Richard is a hardworking Iowa farmer who brought his bride over from Italy after serving in the military during World War II. He is a sturdy, pragmatic provider who firmly believes in traditional Midwestern values. Though he works diligently to support his household, he fundamentally misunderstands his wife's artistic nature and expects a highly conventional marriage.

Michael is the son of Francesca and Richard, raised on their Madison County farm. In the summer of 1965, he travels to the state fair with his father. Decades later, he serves as a key figure in uncovering his mother's private journals and asking a professional writer to document her history. Reeling from discoveries about his mother's hidden life, he must reconcile his childhood memories with new information.

Carolyn is Francesca and Richard's daughter. Like her brother, she leaves for the state fair, giving her mother a rare weekend alone. In adulthood, she initiates an exploration into her mother's private life and feels a profound sense of solidarity with her upon reading her private writings. She hopes that sharing the story will illuminate the quiet loneliness many women experience in traditional domestic roles.

The narrator is an unnamed writer who accepts the task of piecing together a love story from the summer of 1965. Initially skeptical of the romantic tale, he becomes highly invested in the project, conducting extensive research across different states. He serves as the primary bridge between the reader and the historical events occurring on the farm.

Nighthawk Cummings is an elderly, retired jazz saxophone player living in the Pacific Northwest. Having played in various clubs for years, he understands the elusive magic of artistic inspiration and easily recognizes that same creative spark in his friends. He serves as a vital link to understanding the emotional depth of the people he encounters.

Marge is a local woman living near the Johnson farm in Madison County. She represents the tight-knit, conventional, and highly observant farming community that surrounds the protagonists. Her casual phone calls serve as a firm reminder of the watchful eyes of the neighborhood and the rigid social boundaries governing the town.