Apt title for this portrait of Princess Diana (claustrophobic, more metaphorical than real) in the days around Christmas, just before making the decision to abandon the royal family to go back to being simply... Spencer. Good performance by Kristen Stewart, balanced between rebellion and nobility, as well as the direction by Pablo Larrain (let's hope he puts biopics on hold at least for a while, though). However, the film focuses on Diana's state of mind for too long, losing the credibility at the screenplay level that history instead delivered to the news. Even Anne Boleyn's imaginary dialogues border on the ridiculous.