Nothing But the Truth: A Documentary Novel is a 1992 novel written by Avi. The book is a young adult novel in a modified epistolary style through diary entries, personal letters, school memos and transcripts of dialogue. It tells the story of an incident in a New Hampshire town called Harrison where a boy is suspended from school for humming the United States National Anthem as well as the effects of this story receiving national publicity. The main theme of the novel is the subjectivity of truth and that while individual statements may be true, taken separately they may not give an accurate picture of an event.