'It's exciting to be able to play something I've never played before,' the actress tells ET of her 'Book II: Ghost' character, Carrie.
With just one episode left in season 3, the pair spoke with ET about what's to come. 'This Is Us' airs Tuesdays on NBC.
ET breaks down everything we learned from the show's panel at PaleyFest, including what fans can expect from Tuesday's all-new episode!
Showrunners Isaac Aptaker and Elizabeth Berger, along with Hartley and Melanie Liburd, talk to ET about Tuesday's final moment.
See the star-studded front row and what the designers have to say about making red carpet moments.
ET exclusively debuts a first look from Tuesday's episode.