The Runner by Cynthia Voigt is the fourth book in the Tillerman series and follows Samuel "Bullet" Tillerman, a high school senior and talented runner struggling with an abusive family environment during the Vietnam War era. Bullet's life is dominated by his harsh father and passive mother, and his older siblings have already fled. Despite his tumultuous home life, Bullet finds escape and joy in running. However, his world is challenged by the arrival of Tamar, a talented African American runner, which triggers Bullet's internal prejudices and racist behavior. As Bullet faces the possibility of being removed from the track team due to his conduct, he is forced to confront and reevaluate his biases. Through his evolving relationship with Tamar and his personal growth, Bullet begins to understand and appreciate both his passion for running and the importance of accepting others. The novel concludes tragically with Bullet enlisting in the Vietnam War and becoming a casualty, but it emphasizes his journey toward personal growth and acceptance. Cynthia Voigt, the author, is renowned for her exploration of complex themes such as child abuse, trauma, war, and racism in her young adult novels.