Third in the series, I rather enjoyed this one.

Rating: Null/10 (17 December 2010)

It helps to have seen the first two, for continuity, but it is not essential. I am a bit surprised at its low rating, as I think it is a better movie than the second one.
The news (in the movie) tells us there have been a rash of unexplained murders in the Seattle area. We soon find out that a rogue vampire is building an army. It does this by biting people who then get vampire attributes and, as we also learn, are the strongest when "newborn" as a vampire. But why?
The new character is pretty Bryce Dallas Howard as pretty, red-head vampire Victoria. She is out for revenge because her vampire boyfriend had been destroyed some time back, and her best revenge would be to destroy Bella. So the whole movie is about both the vampires and the werewolves in the Forks, Washington area protecting Bella.
Kristen Stewart is of course back as Bella Swan, Robert Pattinson as vampire Edward Cullen, and Taylor Lautner as werewolf Jacob Black. Each of them loves Bella and wants her for himself, each convinced that he would be the best for her. This creates some interesting, competitive situations.
SPOILERS: During the third act the local vampires and werewolves cooperate to create a plan to protect Bella and to defeat the army of outside vampires. They succeed and Victoria is destroyed. Bella agrees to marry Edward, but still wants to become a vampire. Edward still resists. I suppose we will find out in the next movie.