Jacques Futrelle was among the many famous passengers who boarded the R.M.S. Titanic on April 10, 1912. one of the most celebrated American mystery writers of his time, Futrelle was the creator of an ingenious detective known as the "Thinking Machine" — and was an inspiration to the legendary Agatha Christie. He was also one of over 1,500 people who did not survive the sinking of the Titanic. Were Futrelle's crime-solving talents engaged in an onboard investigation? This intriguing question has now sparked one of the greatest mysteries of the Titanic. Our story begins with two deaths that may have occurred before the great ship went down. Two murders that became the mystery writer's final challenge...