Too many fans seem to be blown away

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

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.

Strong acting helps the film overcome an uncertain premise and create characters that hold our attention absolutely.