Interesting little movie, a product of the times and rather short at 1h 15m. This is simply an American propaganda movie of the 1950s. Leading man Gene Barry does a workman like job as the conscience of the few chosen to carry the weapons of mass destruction. The rest of the cast provide sufficient background decoration including the always interesting Stefan Schnabel in an early role looking very Stalin like as megalomaniac leader of the USSR. With a face like that, he was made to play the Soviet heavy. Odd casting decisions here and there - leading lady Valerie French is OK to look at but she sounds bizarrely and comically like Princess Diana. I was surprised to see she was actually British as it sounded like she'd been badly voice coached. Clearly some budget problems beset this movie with quite large chunks set inside a stable/tack room at a California race track. Having set themselves a time line involving 27 days (e.g. 27th Day of the title), they had to fill the story up somehow and try and introduce a mechanism for creating romance between the leading man and woman. Worth watching as a movie of the times and as a bit of social history, but I think other movies like "Invasion of the Body Snatchers" do a more entertaining (if tacky) job of providing allegories of good versus evil and democracy versus dictatorships common in movies of the Cold War.