In the early to mid 1980's I caught this on Cable a couple of times. I believe it was broadcast several times on AMC before they went commercial and also started editing the movies they played. Though I don't recall any nudity in this film-I believe it was equivalent to a PG-13 nowadays. The few films I caught of Billy Wilders lesser know brother i've enjoyed, even though most of them were considerably low-budget. In this movie Wilder makes the most of the mood and atmosphere of his jungle locations and I think does the best job of any of his films i've seen. This is I guess essentially a revenge move with the mood or attitude of a horror movie. Not a revenge film of the 'guns are blazing" or "shoot-em-out" variety, but more of a revenge film in the case of a mystery. I started to watch this because by the description it sounded like a horror move-and i'm a big fan of horror. Well, although it isn't, it does have a bit of a Sci-Fi element to it. The "Omegans" of the title are actually some kind of odd life form which lives in the jungle waters, if I remember correctly. We never get a look at them, but they are secondary to the story anyway. Like I said, there is a bit of a horror element to the movie-I quite enjoy the aging makeup job on Ingrid Pitt as the radioactive waters begin to take control on her body. Yeah, I find this pretty unique as it flirts with several film genres without falling safely into any of them, And I seem to remember the color was quite impressive to boot. I would love to be able to get this on DVD since it seems it won't be on TV anytime soon..