Season 3 of the Apple TV+ hit will be based on Hugh Howey's second novel in the Wool trilogy, Shift, which goes back in time around 300 years to show what exactly happened when the silos were first built.

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.

Ashley Zukerman ( Succession, Fear Street trilogy) and Jessica Henwick ( Huntington, The Royal Hotel) have joined the series regular cast of the Apple TV+ series Silo for Season 3. Zukerman will star as ‘Daniel,’ a young and hungry congressman, and Henwick as ‘Helen,’ a whip-smart reporter.

The Silo season 2 finale introduces some important new characters who will have an enormous impact on the show'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).

Silo seasons 3 and 4 are indeed happening at Apple TV+. Following the critically acclaimed debut of season 2, the streaming service announced that the hit sci-fi drama is officially renewed through season 4,

The Silo Season 2 finale gives us a lot of answers, but still manages to end in a major cliffhanger. Here's what the ending means for Rebecca Ferguson's Juliette and the other silo occupants.