Hulu's new documentary, 'The Nightmare Upstairs,' unveils a chilling true story. In 2023, Utah siblings Ty, then 15, and Brynlee Larson, just 12, locked themselves in their bedroom for 54 consecutive days. This wasn't a game. They live-streamed their entire two-month experience from their mother's home, captivating and disturbing online audiences worldwide. The series delves into the unprecedented reasons behind their self-imposed isolation and the family drama that unfolded.