ABC's highly anticipated 9-1-1: Nashville spinoff has the opportunity to bring over some of the most beloved characters from 9-1-1 and 9-1-1 Lone Star for a crossover - or two. Ryan Murphy expanded his TV empire with 9-1-1, which premiered in 2018 and followed the professional and personal lives of Los Angeles first responders. After initially airing on Fox, the show was canceled in 2023 and made the move to ABC, where it is currently airing. 9-1-1 then expanded with 9-1-1: Lone Star, which followed a New York City firefighter who relocated to Texas.