It's funny, it's tense, it features two great performances from two actors and the director expertly creates a web of odd tension where you actually don't know what is happening for the majority of the run time.

Unshakable, witty and deeply felt, the film will be paying emotional dividends for a long, long time.

Exactly the movie you think it is, but not the movie you want it to be.

It’s not bad or unwatchable but despite the amplitude of the spectacle, the end result is underwhelming.