Ellis Parker Butler (1869 – 1937) was a prolific American author of more than 30 books and more than 2000 stories and essays. The biggest recognition gained due to his famous short story “Pigs is Pigs”, and the famous character in his fiction world was Philo Gubb. “Philo Gubb's Greatest Case” by Ellis Parker Butler is a bright example of detective short stories in which all steps of investigation are built on the main character's power of mind as of all known and all loved hero Sherlock Holmes or Hercule Poirot. This short story and it's title speaks for itself. In this plot the main character an amateur detective Philo Gubb faces with an extraordinary case which becomes on his honest opinion the greatest case. Read it and find out what is the matter of such a strong statement.