The Body Stealers

Parachutists testing new gear are taken over by aliens after descending through a strange red cloud. Gen Sanders orders US Air Force special investigator Allen to come up with some answers. A threadbare Anglo-American enterprise, with too much vapid chat and too little action, ending very feebly (in a British sort of way) with alien girl Lorna Wilde coming over to our side and Allen agreeing to find volunteers to boost her planet's diminishing population.