Emotional and Relentless, but Powerful
Thanks to Netflix, we now get to see a lot of films we would otherwise not.
That said, while my husband was less intrigued, I found this film very powerful. It's relentlessly gut-wretching and if you're familiar with the most basic storyline, it's clearly going to be emotionally manipulative: you can't make a film about the tragic death of a beautiful four-year-old child and have it not be so.
Michelle Williams is excellent and it is absolutely her film. Everyone else -- Matthew MacFayden and Ewan MacGregor -- are there to support her, literally (her character in the film) and figuratively (in terms of performance).
If you're a fan of any of the three actors, you really should see this film. If you only became a fan of MacFayden's after "Pride and Prejudice," he's playing a bulky bearded fellow, who's supposed to be considerably older than the other two characters in the triangle -- and this element does seem a tad forced. He's such a good actor, though, it is easy enough to suspend disbelief.
In summation, this is not an action-adventure film, or even a thriller --it is a drama about unassailable regret. The acting is superb; it's not always easy to watch, but if you know what you're getting into, you may find yourself moved by it.