Crosetti is still on vacation, this and the fact that the detectives are paired with Russert's shift, (abandoning the family atmosphere) makes me give this episode a lower rating. With this said, theme of a serial killer is a good way to introduce new cast members, as it puts more people to work.
Felton really starts to use Howard as a "middleman" (or woman), making the viewer feel sorry for her, and realize more about Felton's character.
In season two, Pembleton mentioned to Bayliss that we all have something to hide. Bayliss' past comes into play when the trio of detectives applies for a liquor license.