It's hard to see any effort in the film. There's no comedy to speak of, no real drama and, worst of all.

Just intense enough to provide a much-needed diversion, just lightweight enough to make you forget about it soon after it’s over. It’s not exactly “good,” per se, but it does what it sets out to do in terms of putting us on edge, which makes it … successful?

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

It's simply great fun, a winsome film and an occasionally over-the-top luxury fantasy that never flags.