Now that Ghosts season 4’s two-part Christmas special has aired, it is clear that the CBS sitcom is wasting one pivotal guest star. The ghosts of CBS’s Ghosts are the sitcom’s main focus, alongside the owners of their mansion home. Sam and Jay, the proprietors of the Woodstone B&B, generally star in each episode’s main plot with one of the ghosts, while the rest of the ghosts are central to the episode’s B-story. Early episodes in Ghosts season 4 centered Sass, Alberta, and Isaac, with the latter getting numerous outings devoted to his antics.

https://screenrant.com/ghosts-season-4-jay-sister-bela-bigger-role-deserve-op-ed/