Books in the I Am Batman series

"Batman's arrival in New York City went even more smoothly than Jace could have hoped. The mayor and law enforcement are trying to cooperate with their new Dark Knight in ways Gotham never did, and his family has settled quickly into a happy routine, not to mention that the love of his life also happens to live in the city! But there's a rotten core to the Big Apple, and a mysterious new serial killer is going to exploit it..."--