Elusive Isabel (1909) is a spy novel by Jacques Futrelle. Published at the height of his career as a leading popular detective and science fiction writer, Elusive Isabel was adapted for a 1916 silent film of the same name starring Florence Lawrence. Celebrated for his brisk storytelling and mastery of suspense, Jacques Futrelle was lost at sea on April 15, 1912 while returning from Europe on the HMS Titanic. His wife, who survived...