Considered to be one of Agatha Christie&#8217;s most controversial mysteries, <i>The Murder of Roger Ackroyd</i> breaks all the rules of traditional mystery writing. A widow&#8217;s suicide has stirred rumors of blackmail, and of a secret lover named Roger Ackroyd, who was found stabbed to death in his study. The case is so unconventional that not even crack detective Hercule Poirot has a clue as to how to solve it.