The Murder of Roger Ackroyd - Agatha Christie

Roger Ackroyd knew too much! He knew that the woman he loved had poisoned her late husband, and he knew that someone was blackmailing her. Now comes the new news that this woman committed suicide.

The Evening Mail will bear for Mr. Ackroyd the name of the man who was blackmailing the suicidal lady, but Ackroyd himself is suddenly killed. Poirot finds himself in the midst of events, what will he do?