While the past three seasons have heavily revolved around Jack, season four will shift the focus to the Big Three. "I think a lot of the mystery of Jack has been kind of told by the end of this season [season three], but it doesn't necessarily mean it's any less interesting to go and live with those younger families," Fogelman told Good Housekeeping. "We are starting to move towards new chapters in season four with the Big Three . . . some of the more mysterious or dramatic pulls of the series might start falling into the hands of some of our other characters."