Season 2 of Silo wraps up with intense twists and revelations. Here’s a breakdown of the key moments and what they mean for the story’s future.

Warning: Major spoilers for the Silo Season 2 finale ahead. Silo, based on the books by Hugh Howey and created for television by Graham Yost, has become one of the crown jewels of Apple TV+, recently earning a two-season renewal for Seasons 3 and 4 (the latter of which is set to be the show’s final installment).

Or so it seems now, before the next “everything you thought you knew was wrong” twist comes along at the end of a season to upend things. But what was the purpose of the Silos, really? Were the built to save some remnant of the human race until such time as the surface world could be reinhabited?