Easily the worst of the “Monsters and Madmen” criterion films (thus far at least). There were some moments, like the monster wandering the corridors, that were pure perfect 50s sci-fi B-movie that I couldn’t help but feel an odd and surreal sense of wonder. It was moments like that, that created that specific feeling, where I think I understood the cult appreciation of these films, at least to some degree.
A movie that points up Durgnat's claim that pulp can be alarmingly fertile with all sorts of unresolved little questions jostling with each other. So Sibling Rivalry, with the Woman in the Middle (who is Renunciation of Adventure as in many Westerns), Social Hubris & its Dangers, Individual Hubris & its Punishment all rub random elbows with each other & it all ends with a man walking off with a woman down a corridor
50s sci-fi B-movie from director Robert Day is entertaining enough for B-movie fans, but far from the best. A fairly conventional rocket melodrama in its first half, and a pretty basic monster movie in its second - though it does have its original elements, and is surprisingly gruesome considering when it was made.