Nina's missing or deceased husband, whose character is revealed through the accounts of others, highlighting his demanding and self-centered nature.

The novel’s second narrator and foil to Jake, Christian is devoted to his wife and struggles with his values as he navigates complex emotional and situational challenges.

Christian's wife, who deals with betrayal and guilt while attempting to overcome personal trauma and rebuild her relationship.

A figure who represents strength and resilience through adversity, having raised Nina alone, and is characterized by her protective nature and complex relationship with her daughter.

Nina's colleague who becomes an increasingly intrusive presence in her life, prompting her to assert boundaries and seek safety in her workplace.