This made-for-TV movie has several things going for it. The acting is well done, no surprise there because of the professional cast, with Robert Reed being the standout due to one striking monologue he has. The locations are atmospheric and do give the impression of being far from civilization. Also, there are no boring bits.
However, as good as the movie is, there are a couple of problems that hold it back from true greatness. The first problem is with its length. Even though the movie runs a little less than 75 minutes long, the movie feels somewhat stretched out. Maybe this would have played better had it been produced as a one hour television episode of "The Twilight Zone". The second problem is that the "mystery" is no mystery - I guessed what the twist would be in the opening minutes! In fairness, the movie does trick the audience just before the end into thinking there's some other explanation.
While I wouldn't quite say that this is worth seeking out, if you come across it when you have some time to spend, you'll probably be entertained enough.