Unreliable narrator
An unreliable narrator is a narrator, whether in literature, film, or theatre, whose credibility has been seriously compromised. The term was coined in 1961 by Wayne C. Booth in The Rhetoric of Fiction. While unreliable narrators are almost by definition first-person narrators, arguments have been made for the existence of unreliable second- and third-person narrators, especially within the context of film and television.