“9 Bullets” (** out of four) was an emotionally flat melodrama about a troubled former drug addict (Lena Headey) who goes on the run with a young boy (Dean Scott Vasquez) when both of their lives are threatened by her unstable ex-boyfriend (Sam Worthington). Earnestly done film is given a boost by sincere performances but fires mostly blanks because it never gets going or takes off. Sharon Stone played a similar role in 1999’s bleak (and underrated) “Gloria.”