Agatha Christie is the best selling novelist of all time and nearly every story she ever wrote in involves one or more commonly several dead bodies and the cause of death. The motor is behind violent crimes clues that inevitably are left behind and the people who put the pieces together to solve the mystery invite the reader to analyze it evidence and race to find the answers before the detective does nearly every step of the way Christy outlines the nuts and bolts of every early 20th century crime detection rely on on physical evidence to tell the real story behind the decades, humans a wreck to escape detection.