Best soap opera I've watched in years.
Probably has one plot twist too many, but I can't deny that it makes what might otherwise be a dry topic a very entertaining and surprisingly humorous chamber piece.
You really feel the claustrophobia and rising tension through the framing of the shots and the edits. That said, I found the music a bit overbearingly OTT in signposting emotional cues, almost to the extent of a storytelling crutch. One particular scene that also appears in the trailer was so ludicrously bombastic I nearly laughed out loud at its unintentional funniness.