A "charming piece of literary detective work" (Booklist) that reexamines Agatha Christie's classic whodunit. Her classic novel The Murder of Roger Ackroyd has sparked great debate in the years since its publication in 1926, inspiring cultural critics from Roland Barthes to Umberto Eco to explore its unique construction: a murder mystery in which the murderer appears to be the narrator. Now, in a thrilling twist on the conventional solution, Pierre Bayard's Who Killed Roger Ackroyd? reopens the Ackroyd file with unexpected results: Is the killer still at large? Bayard's in-depth investigation of this well-loved classic will change forever the way mysteries are read.