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.

The movie's not perfect, but it sticks the landing of its message. It was engaging - thrilling at times - and I personally thought it was a great time.

Excellent and certainly provocative... If nothing else, the film is a real conversation starter.

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