Harmonium (2016)

This is definitely a movie where you are better off not knowing much ahead of time. I recommend caution in reading reviews of this one.

The focus here is on a family: young daughter, overprotective mom, distant disengaged husband. The husband takes in a mysterious lodger without consulting his wife. That's really all you should know in advance.

If you particularly appreciate a movie that goes in unexpected directions, this film is for you. If you are interested in how relationships change under stress, this film is recommended. It is perhaps a bit long and occasionally a bit repetitive, but it is definitely worth seeing. You'll think about it a lot afterwards.