'This Is Us' Season 3 Has Officially Started Production Get your tissues ready because the cast is back at work and started filming season 3. Creator Dan Fogelman tweeted a picture from set that probably represents the excitement fans feel. Mandy Moore chimed in and said she loves their "fam." Moore hinted back in May that parts of the series finale may have been shot. However, she said the series finale is “a ways off.” According to members of the cast, the first episode of the new season seems to be an intense one. The show returns on
September 25.