The ever excellent Thomasin McKenzie plays a mousy, plain young woman in 1960’s Massachusetts, working in a prison for young offenders. She gradually becomes obsessed with the prison’s glamorous new doctor, the occasionally excellent Anne Hathaway.

As we were talking about plot twists last time, this one has an absolute belter. A proper eyes-wider-sit-back-in-your-seat-mouth-agog sideswipe.

Unfortunately, the script can’t quite tie anything together after that. Everything feels a little off and the ending is deeply unsatisfactory.

It’s a shame as the film as a whole is thoroughly enjoyable. Both leads are superb, the period details are excellent (it wrings a lot out of ‘smoking in inappropriate moments’) and the script trusts the audience enough to ask their own questions in order to build the tension. I really wanted everything to add up to more.