The matriarch of the Darker family and owner of Seaglass, known for her eccentric personality and past success as a children’s author, who plays a central role in the family's story.

The son of Nana and father to Daisy, Rose, and Lily, a man torn between his family and his conducting career, leading to long absences from his children’s lives.

Frank’s former wife and the glamorous mother of the three Darker sisters, whose cool demeanor often distances her from her daughters.

The middle Darker sister and mother to Trixie, portrayed with a strong sense of entitlement and a tendency towards vanity and selfishness.

The eldest of the Darker sisters, known for her beauty and intelligence, who often takes on a leadership role within the family during times of crisis.

Lily’s teenage daughter, who shares a bond with Daisy over their love of books and games, adding depth to her character’s interactions with the family.

A non-family member who spends time with the Darker family, his charisma and complex past make him an intriguing figure within the story.

Conor’s father, who appears in the novel's flashbacks and grapples with personal struggles, impacting his relationship with his son.

Nana’s unnamed literary agent, introduced at the beginning of the novel, who recognizes the significance of Daisy’s narrative and plays a role in its publication.

Nana’s Old English Sheepdog, who provides moments of levity and connection within the family dynamic, particularly noted for his interactions with Daisy.