I've seen this film a few times, I must confess, and I like it. My favorite part is Mike Trent's bender in the bars of the Juneau waterfront. For my money, it is the centerpiece of the film and also where Denver Pyle appears. I love McCarthy era portrayals of Soviet operatives. Hantz is a first class strange character with voyeuristic and other kinky tendencies. The official-type Americanos are very fifties. People often expect all films to be realistic and can't seem to appreciate the interesting little views we can get into the past from off beat, low budget stuff like "The Flying Saucer".
Review of The Flying Saucer
