Unreliable narrator

In literature, an unreliable narrator is a first-person narrator, the credibility of whose point-of-view is seriously compromised, possibly by psychological instability or powerful bias. Stories told by narrators who come to appear unreliable raise unsettling questions about the limitations of human knowledge. Well-known fictional works with unreliable narrators include Vladimir Nabokov's Lolita and Pale Fire, Nathaniel Hawthorne's The Blithedale Romance, Henry James's The Turn of the Screw, Edgar Allan Poe's "The Tell-Tale Heart," and Agatha Christie's The Murder of Roger Ackroyd. Children may be unreliable narrators, as may villains.