A completed and unpublished Michael Crichton novel, recently discovered by his widow, is coming out next year. HarperCollins Publishers told The Associated Press on Thursday that "Dragon Teeth" is scheduled for release in May of 2017. According to HarperCollins, the book is based on the rivalry between 19th century paleontologists Edward Drinker Cope and Othniel Charles Marsh, as both explored fossils in the American West.