entertainment-tonight 'This Is Us': How These 3 Revelations Changed Everyone's Lives -- and Could There Be a Fourth Sibling? Warning: Spoiler alert! If you haven't watched Tuesday's episode of This Is Us yet, do not proceed. 'This Is Us': How These 3 Revelations Changed Everyone's Lives -- and Could There Be a Fourth Sibling? http://ftpcontent.worldnow.com/kfmb/syndication/et/13990.html