Remember the movie "Sixth Sense " well "Birth" is a bit like it, trough the plot is different of course- and so are the actors. In Six Sense we have two stars Bruce Willis and Haley Joel Osment, while in "Birth "we have Nicole Kidman and Cameron Bright ( who is actually a pretty good actor judging by his filmography ) . The acting was fine  and the only think that I didn't like was the scene at the theater, when for like 30 seconds or more I was watching the face of Nicole Kidman  I got what the director was trying to emphasize in that scene , but 10 seconds or so would have been just enough. Birth is a good Mystery film, because it really keeps you interested in the story. It is full of symbolic of life and dead and has a lot of meaningful scenes. I was surprised to see that is has an R rating for sexuality  as there is just one sex scene, fairly short and honestly the movie would have been even better if it wasn't in it. The soundtrack was good  made of classic music and suspense  typical for this genre  trough I felt that some scenes could use some more music on the background.