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. “The Hard-boiled Egg” 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. In this short story on the place of crime were nothing but a spoiled hard boiled egg, and nothing more. Who left it?