Charles is an undergraduate student at Harvard studying medieval history. Raised by a strict academic father who opposes religion, Charles initially pursues secular studies. He soon experiences an undeniable calling to the ministry. He is thoughtful and intellectually curious, choosing to forge his own path while seeking a connection with Lily.

Lily is an English literature student at Radcliffe. Having lost her parents in a car accident at age fifteen, she copes with her grief through academic rigor and strict self-isolation. She maintains a staunchly atheistic worldview, finding comfort in cold logic and literature rather than socializing or religion.

James is a pragmatic university student seeking to escape his family's cycle of trauma. Haunted by his veteran father's alcohol addiction, he initially views religion skeptically. He decides to pursue ministry to enact tangible social progress. He is driven and deeply committed to improving the world around him.

Nan is a privileged, religious young woman attending Wheaton College to study music. Raised to believe piety guarantees favor, she seeks to lead a traditional Christian life. She is a natural nurturer who finds comfort in domestic routines and gardening.

Tom is an unconventional instructor at Harvard who pushes his students to think critically. He serves as an intellectual catalyst, encouraging students to explore historical faith without demanding strict adherence to dogma.

A Catholic priest who guest-lectures at Harvard. He challenges the students to genuinely consider the existence of God, sparking a profound realization in his audience.

Lily's uncle who steps in after her parents' tragic deaths. He is practical and encourages his niece to pursue her studies and maintain hope for the future.

A successful banker who once considered the priesthood. He uses his financial resources to support his family, viewing his philanthropy as his own form of ministry.

James's college roommate. He helps his more reserved roommate manage the social complexities of university life.

Bill's girlfriend, who forms part of the social circle that helps integrate James into college life.

A friendly London landlord who helps new arrivals feel comfortable in an unfamiliar city.

Henry's wife, a welcoming woman who shares her own early marital experiences to offer comfort to her new tenants.

An eccentric, old-fashioned associate pastor and former missionary. Despite his unusual demeanor, he offers profound insights into the nature of commitment.

A London book collector who moves in ecclesiastical and academic circles.

Arthur's wife, a woman with a deep interest in English gardening. She introduces visitors to horticultural philosophies that emphasize resilience.

The former, flamboyant minister of a New York City church. He leaves his post due to health issues, prompting a search for replacements.

The head of the search committee at Third Presbyterian Church. He is concerned with maintaining the church's respectability and managing differing ministerial styles.

A member of the Third Presbyterian Church search committee who questions prospective ministers about their goals.

The elderly, feisty secretary at Third Presbyterian Church. Having abandoned an acting career due to harassment, she is highly protective of the church's stability and offers blunt advice.

The music director at Third Presbyterian Church. Recognizing hidden talents in the congregation, the director delegates responsibilities to build community involvement.

A young, church-going Black student who takes over administrative duties at Third Presbyterian. He is highly efficient and offers grounded perspectives during times of tension.

One of the Barrett children. He possesses a joyful disposition that brings warmth to his family's daily life.

A member of the Barrett family who requires specialized care and attention. His unique developmental needs prompt deep reflection and adaptation among his caregivers.

An innovative doctor focusing on child psychology and developmental behaviors. She encourages observation and adaptation rather than strict institutionalization.

A student of child psychology who conducts hands-on behavioral research. She provides practical strategies and emotional support to families managing developmental challenges.

A young girl in the MacNally family whose presence brings profound joy and shifts the perspectives of her caregivers.