The 13-year-old protagonist grappling with grief and adolescence after his father's death. He struggles with his mother's new relationship, acts out by stealing and wielding an antique knife to assert control, and ultimately undergoes a coming-of-age transition as he leaves for boarding school.
Toni serves as Thomas's primary companion and confidant during his summer rebellion.
Oscar acts as a replacement father figure whose presence disrupts Thomas's grief and family stability.
Explore the full interactive character relationship map of The Knife