After his disappearance on May 29, 1914, the Empress of Ireland still arouses passionate curiosity of crowds. Shipwreck disaster (there are more than twelve thousand victims), this documentary reconstructs the investigative stages of drama and addresses a number of issues. Why for example, have sailed with a ship whose rudder was defective? Why watertight doors were not closed at the time of the collision, which resulted in a rapid sinking? And the inquiry has withheld nothing? Why a key witness is found dead and his testimony was never retained by the same commission of inquiry? Thanks to recent investigations, expert witnesses and numerous reconstructions, the investigative documentary sheds new light on one of the biggest news story of the twentieth century and has become a final sum on the subject.