The Boy Must Live (S05E11)

As the countdown looms, Peter, Olivia, and Walter will do whatever it takes to thwart the Observers' reign over the universe. Walter immerses himself in the notorious deprivation tank, seeking crucial insights about the enigmatic Donald. At the same time, Captain Windmark embarks on a significant mission of his own, shedding light on long-standing mysteries. The stakes are higher than ever as the team races against time to uncover the truths that could alter their fate.