Movies: Is She Target or Assassin?

Nicole Kidman is the go-to actress for a certain kind of grownup movie, and she keeps proving why she gets those juicy roles. It's because she can do almost anything. She has a unique knack for letting a wide range of characters live inside her; they radiate through that translucent skin.

This time she's Silvia, a U.N. interpreter with a murky agenda and half the goons of an African country on her slim tail. Sean Penn is Keller, the federal agent assigned to figure out what she's hiding. Is she simply a victim? Or is grief driving her to assassination?

Grieving is...