Came to give this film a good rating and was surprised to see so many negative reviews. Yes, the movie is long and slow-paced but then so are some of the greatest movies ever made. The cinematography is gorgeous and Nicole Kidman's performance is fantastic: as utterly convincing as the grim wrecked Erin Bell as she is the younger, sharper and more selfish version of herself in love with her partner Sebastian Stan.
Modern day Erin has failed as a mother, as a cop, essentially at life, has abused her body to the point of collapse, but somehow she still smolders with some kind of internal energy - maybe it's her sixteen year old thirst for revenge? Either way, Kidman is a wonder to watch as she strides into every scene like some kind of vengeful limping grim reaper, pistol whipping anyone who stands in her way.
I was really surprised to read so many people say the ending was somehow disappointing or anti-climactic, because - for me - it was a fantastic twist, that didn't really need the couple of flashbacks that made sense of it. I thought this was a great movie, absorbing and gritty and deeply sad.