Gory but fun thriller has strong violence, language, nudity.

Below Zero flirts with character depth and shocking brutality, but doesn't go all-in on either. The result is dark, pulpy fun that feels like it should get around to pulling off something truly audacious, but never does.

Not a bad cross-up of "Con Air" and "Assault on Precinct 13" on paper and director Lluís Quillez generates decent atmosphere on a limited budget. But there's also paucity in the script, which builds to disappointing revelations and limp subtext.

Below Zero builds a strong sense of foreboding from the beginning.