The film twelve is a book adaptation from the novel with the same name. The director is Joel Schumacher. It's about a drug dealer Mike. He sells cannabis to his former class mates, since his mother died. But than a new drug named twelve appears and everything changes. Even thought Mike regrets selling this drug the teenagers in the book get addicted to it.
Joel Schumacher managed to create a film which could catch the atmosphere of the book very well. The effects Joel used to make things more interesting are developing many important aspects of the movie.
Furthermore the film shows which problems teenagers in the upper east-side of New York have and that drugs don't solve those problems.
Unfortunately there are too many characters in the movie which makes it nearly impossible to develop them authentic enough to create sympathy.
To sum up the film is made well. And established it to show problems of teenagers in New York. Even if there are a little bit to much characters.