Apple TV+ series Silo reveals central mystery in latest episode

Apple TV+’s sci-fi series Silo has started answering its central question in season three, episode seven, titled “Radio.” In the episode, the show reveals who created the massive underground silos through an expanded flashback plot. Congressman Daniel Keene (Ashley Zukerman) and journalist Helen Drew (Jessica Henwick) investigate dangerous geopolitical secrets tied to tensions involving Iran. After a storyline in which their vehicle appears to take on a life of its own, they meet Senator Thurman (Laura Innes), who introduces tech billionaire Per Stensen (Colin Hanks). The pair are told they’ll receive answers after signing NDAs and travel toward a Georgia property spanning 300,000 acres and 42 former farms. The episode ends with a massive drill under construction, implying the silos’ beginning. Silo season three premieres Fridays on Apple TV+, with the finale on September 4.