Yet in the end the self-conscious importance of the film produces a rather queasy feeling, for really this story is no more than a crude exploitation — decked out with our latest scientific finery — of what amounts to a penny dreadful fantasy. If you stop and think about it, even if there were a nest of Nazis hiding out in South America, most of them would be pushing 80 by now, and quite incapable of the exertions required by this farflung, not to mention farfetched plot.