Fun premise, good actors, bad writing. This film seemed to have potential at the beginning but it quickly devolves into a trite action film. Ultimately it's very boring.

I really wanted to like this movie. I feel terribly cynical trashing it, and that's why I'm giving it a middling 5. Actually, I'm giving it a 5 because there were some superb performances.

It’s not bad or unwatchable but despite the amplitude of the spectacle, the end result is underwhelming.

Unshakable, witty and deeply felt, the film will be paying emotional dividends for a long, long time.