A crossover with Batman. Carter Grayson goes home to Gotham-- and learns the family secret. This appealed to my inner comic book geek. Without giving too much away, Carter's incredulous reaction to learning about the superheros in the family-- and getting to see a wistfully aged BatFamily to boot made the story for me. While it does have the requisite spilling of secrets, it seems natural-- and interesting that it took this long. Archived at Fanfiction.net