Though Sunday night blessed this dedicated fanbase with the chunk of information they've been craving for months, there's still plenty of questions yet to be answered on This Is Us (series writing: Kay Oyegun). We can finally say with certainty what happened to Jack — after initially escaping the slow cooker-induced flames that quickly and quietly engulfed the Pearson home, he suffered cardiac arrest back at the hospital, which the doctors attributed to severe smoke inhalation. The post-Super Bowl episode of the show also gave us fans a bit of a glimpse into why exactly Kate blames herself for Jack's death — he ran back into the home to retrieve her dog, meaning that he was inhaling the smoke for far longer than the rest of the family was.
The reveal of Jack's death, though heartbreaking, offered some closure for viewers who had agonized over all the potential possibilities. It means the show and its audience can begin to move on from this big mystery, and explore plenty of other twists and turns that are likely coming down the pike. There are already plenty of things that This Is Us has introduced that are begging to be expanded upon. Here are the biggest questions that still remain even after Sunday's big reveal.