Watch The Deadly Mantis (1957) (1957) HD Full Movie Free on SolarMovie. Watch The Deadly Mantis (1957) (1957) online free. A giant prehistoric praying mantis, recently freed from the Arctic ice, voraciously preys on America...A giant prehistoric praying mantis, recently freed from the Arctic ice, voraciously preys on American military at the DEW Line and works its way south.