That was over 14 years ago in 2007.
Today he is 45, and has starred in 43 movies in total, 20 since Gone Baby Gone was released.
In Gone Baby Gone, I think Casey Affleck looks:
Gone Baby Gone scores 7.2 out of 10 on The Movie Database.
Casey Affleck's first acting role was as 'Jerry' in Lemon Sky, released in 1988 when he was 12.