20 Million Miles to Earth is a 1957 American blackandwhite science fiction giant monster film written by Bob Williams and Christopher Knopf from an original treatment by Charlotte Knight. The film was produced by Charles H. Schneers Morningside Productions for Columbia Pictures and directed by Nathan H. Juran. As with several other SchneerColumbia collaborations, it was developed to showcase the stopmotion animation talents of Ray Harryhausen.
That night, after Marisa returns home to the trailer that she shares with her grandfather, a small creature hatches from the glob and Leonardo locks it in a cage. By morning, the creature has tripled in size, and McIntosh arrives in Gerra, accompanied by government scientist Dr. Justin Uhl, and meets with Calder and Signore Contino, a representative of the Italian government. As Leonardo and Marisa hitch up the trailer containing the creature to their truck and head for Rome with their discovery, McIntosh informs the astonished Contini that Calder has just returned from Venus. Calders spacecraft, crippled by a meteor, carried a sealed metal container bearing an unborn species of animal life from the planet. As police divers begin to search for the capsule, McIntosh offers a reward for its recovery, prompting Pepe to come forward and lead them to the empty container. When Pepe tells them that he sold its contents to Leonardo, who is currently on his way to Rome, McIntosh and Calder pursue him.That night, when Leonardo stops the trailer, he discovers that the creature has grown to the size of an adult human. Soon after the creature breaks out of his cage and flees, Calder and the others arrive. Confused, the beast blunders onto a nearby farm, terrorizing the animals. It is revealed that the creature, known as the Ymir, eats sulfur as it rips open several bags. While it is feeding, the Ymir encounters the farmers dog and kills it, alerting the farmer. The farmer is about to attack it when Calder and the others reach the barn. After trapping the Ymir in the barn, Calder explains that the Ymir is not dangerous unless provoked. However, the Ymir proves virtually impossible to prod into a cage, and kills the farmer when he stabs it with a pitchfork as it tries to escape. When the creature breaks out of the barn and disappears into the countryside, the commissario of police insists that it be destroyed, but Calder pleads with him to reconsider. ........
Source: Wikipedia