Trollhunter is a wonderful low-budget Norwegian film about a group of Uni students making a film who stumble across a great secret, that there are trolls and the government has a branch that covers up their existence.
While it is entirely low budget, the effects are good and atmospheric (even if the trolls look a little goofy they still manage to be frightening) and it is well written. Overall, I thought it was well worth watching. Note, however, that we watched it in Norwegian with subtitles, I can make no claims as to how good (or bad) the English dubbing is.
Believable Conspiracy, the Troll Security Service (TST in Norwegian) is believable because it is small. My problems with most conspiracy theories is that they involve two thousand people and none of them have ever talked. The Mafia have a saying about that, it goes, “Three people can keep a secret . . . if two of them are dead.”
Modern Monsters, the explanation of trolls and how they (still) exist in the modern world is fairly plausible. It tries to fold the legends of trolls into a modern ‘scientific’ understanding and done quite well.
Using Technology, the adaption of technologies, modern and ancient, to the problem of dealing with trolls is well done.
And a few less good points (which can be ignored):
Documentary Format, leading to some shaky cam moments, but not as bad as say Cloverfield or Blair Witch.