Arthur Conan Doyle's "Important Summons" is a crime novel written by a master of the detective genre. The main character, known throughout the world Sir Arthur Conan Doyle, sets out to solve a complicated case in which the darkest sides of the human soul are intertwined. This book reveals not only the tiny details of a criminal investigation, but also philosophical reflections on good and evil, faith and doubt. "Important summons" is an amazing mixture of mystery, intrigue and wisdom, which fascinates the reader from the first lines and leaves a mark on the soul for many years.