A tarantula as big as a barn puts the horror into this well-made program science-fictioner and it is quite credibly staged and played, bringing off the far-fetched premise with a maximum of believability.
Some scientists, stationed near Desert Rock, Ariz, are working on an automatically stabilized nutritional formula that will feed the world’s ever-increasing population when the natural food supply becomes too small. Through variously staged circumstances, a tarantula that has been injected with the yet unstabilized formula escapes and, while continuously increasing in size starts living off cattle and humans.
Leo G. Carroll is excellent in his scientist role, while John Agar, young town medico, and Mara Corday carry off the romantic demands very well.