The Beast starts making its way down the east coast of North America, sinking a fishing ketch off the Grand Banks, destroying another near Marquette, Canada, wrecking a lighthouse in Maine, and crushing buildings in Massachusetts. Nesbitt gains allies in paleontologist Thurgood Elson (Cecil Kellaway) and his lovely young assistant Lee Hunter (Paula Raymond) after one of the surviving fishermen identifies from a collection of drawings the same dinosaur as Nesbitt saw. Plotting the sightings of the Beast on a map for skeptical military officers, Elson proposes the Beast is returning to the Hudson River area where fossils of Rhedosaurus were first found. In a diving bell search of the undersea Hudson River Canyon, Professor Elson is killed by the Beast. The Beast eventually comes ashore in Ma