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.

After playing with our expectations, this turns out to be a very different sort of film.

This is one of the best movies I’ve seen in a very long time. You have to go and see this on the big screen.

One of the most extraordinary films you will see this year. Take that as you want.