If the ambition is to provide two hours of instantly forgettable, popcorn-munching escapism, it succeeds.

This story has more twists and turns than a second-rate soap opera.

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.

An old-fashioned movie made with new-fashioned finesse.