Terrible acting, screenplay and direction.

The film never slows down or bores, plunging from one harrowing sequence to the next.

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.

It is an exhilarating, distressing, funny and profound film, with one of the more memorable film scores in years,