The middle Ryan sister, a dutiful mother and wife whose journey involves balancing her family obligations with her personal ambitions in interior design.

The youngest Ryan sister, known for her observant nature and struggle with family secrets, navigating her first healthy romantic relationship while seeking truth and acceptance.

A charismatic figure from the past whose return prompts the Ryan family to confront longstanding traumas, while he seeks closure for himself.

The Ryan family matriarch, characterized by her emotional reserve and avoidance of painful truths, rooted in her devout Catholic faith.

The family patriarch, often retreating into his train collection, who reveals unexpected depth and private convictions when confronting the family's history.

The deceased oldest Ryan sibling, whose memory and actions impact the family deeply, symbolizing unresolved guilt and communication failures.

A figure from the past whose accidental death acts as the catalyst for enduring grief and secret-keeping within both the Ryan and Larkin families.

Maggie's girlfriend, whose candid and honest nature challenges the Ryan family's patterns, serving as a catalyst for growth and change.

Alice's husband, the Catholic school principal, whose traditional values are tested as he strives to support his wife through personal challenges.

Finn, James, Augustus, and Poppy, representing the next generation's potential to escape the family's legacy of trauma and secrecy.