In the eighth season of CSI: NY, we find a changed crime lab four months after Season 7 ended. After closing the book on his last unsolved case, Mac has decided to leave the force and work for a lab that processes DNA recovered from 9/11. He is also spearheading the 9/11 memorial. With the 10-year anniversary approaching, it is not just Mac, but the entire crime lab who reflect on the tragic events. The team also struggles with new professional and personal challenges: Jo has begrudgingly taken over Mac's job on an interim basis as she continues to raise her son, and Danny has become a Sergeant and copes with additional strain on his marriage.