This Is Us season four is quickly approaching. The series is Returning later this month, and the recent trailer gave us a quick glimpse of what's to come. In addition to learning more about the Pearson family, we're also going to meet a few new characters.

Once Upon a Time actress Jennifer Morrison has joined the Cast in a mysterious role, and we're curious to see how all the other fresh faces in the trailer will fit in with the story. Not to mention, who will be playing Adult Annie, adult Deja, and adult Jack in the flash-forward? Here are all the new and returning stars for This Is Us season four.