John Nolan's training officer Talia Bishop (Afton Williamson) does not return for the second season due to the allegations made by the actress to the showrunners in regards to racism, bullying and also sexual assault she experienced on set throughout the first season. She was offered the chance to continue her characters role in the second season, however she turned this down citing her dissatisfaction with the lack of consideration demonstrated by the showrunner in regards to her allegations.
This episode picks up right after season one ended, same day. Nathan Fillion had dramatically lost weight in between seasons and looks very different.