This is one of the few movies I've ever seen where the whole audience broke into spontaneous, loud applause a third of the way in.

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.

A film of deceptively outspoken contemporary relevance, this is cinema at its most alert, alarming and alive.

By the time the dramatic fireworks start popping off, each one feels earned.