Sweet Evil (2010)

Anais Demoustier provides a frighteningly believable performance as a 15-year-old who is badly raised and who lacks any confidence whatsoever in the righteousness of the judicial system. She lies about her circumstances to insert herself into the household and lives of a judge and his wife. Then, manipulating all those around her, she forges toward her goal with sociopathic indifference to the collateral damage.

With a supremely professional supporting cast and a simple, classic soundtrack, the ambiance stays just dark enough to keep the viewer worried the entire time without veering into the genre of horror. This is real-world grit, and very satisfying.

Unlike many French films I've seen, this one didn't leave plot points unresolved. It didn't jump forward while giving the viewer no clue to how much time had passed. And the subtitling seemed complete and error-free. Nicely done. I enjoyed it.