The researchers who thought that the Arizona desert would give them sufficient isolation for their experiments with growth hormones have a second think coming, when their travails turn a simple arachnid into a hundred-foot-tall monstrosity. Memorable sci-fi staple of the '50s stars John Agar, Mara Corday, Leo G. Caroll, Nestor Paiva; yes, that's a young Clint Eastwood behind that pilot's oxygen mask. 80 min. Standard; Soundtrack: English.