A wealthy entrepreneur secretly creates a theme park featuring living dinosaurs drawn from prehistoric DNA. Before opening the attraction to the public, he invites some scientists to experience the park and help calm anxious investors; but, during the visit, the security system breaks down and prehistoric creatures break out.

Two men, each handsome and unusually adept at his chosen work, embodied an element of the great dynamic that characterized America₂s rush toward the twentieth century. The architect was Daniel Hudson Burnham, the fair's brilliant director of works and the builder of many of the country's most important structures, including the Flatiron Building in New York and Union Station in Washington, D.C. The murderer was Henry H. Holmes, a young doctor who,...