Synthesized answer
The provided passages do not contain specific evidence that the author provides regarding the murder of Roger Ackroyd. The text describes Pierre Bayard's work as a re-reading of Agatha Christie's novel, challenging Hercule Poirot's conclusions and presenting a new solution to the crime [Passage 1].
The passages mention that Agatha Christie, in her novel, exposed the narrator as the killer and that Hercule Poirot's solution to the crime is considered motiveless and impractical [Passage 1]. However, the nature of the evidence Bayard uses to support his re-reading is not detailed in these snippets.
Synthesized from the book passages below. Chat with the book on Feynman for follow-up.
From the book
Title: Who Killed Roger Ackroyd? by Pierre Bayard Description: A psychoanalyst and literary scholar offers a re-reading of Agatha Christie's classic novel, "The Murder of Roger Ackroyd," challenging Hercule Poirot's conclusions about the identity of the killer and presenting a new solution to the crime. Categories: Fiction Pages: 182 Snippet: In her most famous work, the murder of Roger Ackroyd, Agatha Christie confounded the conventions of the detective story by exposing her narrator as the killer. But Hercule Poirot's solution to the crime is a motiveless as it is impractical.