Dumb Witness Author:Agatha Christie A Hercule Poirot Book. Emily Arundell writes to Hercule Poirot because she believes she has been the victim of attempted murder. She is a wealthy spinster living in Berkshire. What she believes is attempted murder is seen by her household as her tripping over a ball left by her dog, the fox terrier Bob. When Poirot receives the letter, she h... more »as already died.« less