‘Silo’ Season 3 Review: Apple TV+ Sci-Fi Show Connects Timelines and Mysteries

One of the strongest science-fiction series in recent years—another feather in Apple TV+’s cap, a platform that seems to specialize in the genre—Silo returns for its third season with a key shift, one already foreshadowed in the Season 2 finale (spoilers ahead if you’re not caught up). The show now turns backward—effectively toward something resembling our present—to explore what may be the origin of the post-apocalyptic reality in which the story unfolds. As a result, Season 3 splits into two sharply contrasting timelines: no longer two separate silos, as before, but one thread set before the collapse and another continuing the events in that bleak, tightly controlled future.

Created by Graham Yost and based on the novels by Hugh Howey, the series resumes the story in Silo 18, following survivor Juliette Nichols (Rebecca Ferguson), now the mayor—though with a major complication. After her perilous return from the outside, she has completely lost her memory. She’s moved around like a ceremonial ghost, unable to recognize the people who once defined her life, including close allies and friends. Meanwhile, the fragile calm inside the silo—already shaken by a failed rebellion—begins to crack again. Juliette gradually realizes she’s being manipulated through drugs and tries to piece together what’s really happening, even as she risks becoming a target of the true power brokers, who are watching her closely. As established last season, another uprising could mean the silo’s total annihilation.

The narrative frequently cuts to Washington, in what appears to be the present day. There, a young senator, Daniel (Ashley Zuckerman), is drawn into a mystery involving his sister, an Air Force pilot who begins to suspect something off about covert military operations targeting Iran. Then, conveniently—or suspiciously—she and her squad are involved in a strange accident: several die, and she survives but loses all memory of the event. With the help of a journalist, Helen (Jessica Henwick), Daniel starts digging into what’s going on, entering a familiar but effective terrain of conspiracy, cover-ups, and institutional secrecy. Gradually, this thread begins to connect with the distant future timeline.

The contrast between the two strands is striking: one is claustrophobic, dimly lit, and inward-looking; the other evokes a 1970s-style political conspiracy thriller. Still, Silo works better here than it did in its previous season. The “present-day” subplot not only gives the series some literal breathing room but also offers a clearer, more accessible narrative engine for casual viewers. By contrast, events inside the silo can become convoluted at times, with shifting alliances, betrayals, and characters presumed dead who keep resurfacing episode after episode. Juliette’s attempt to reconstruct her past and reposition herself within the silo’s dangerous power structure remains the emotional and narrative core, even if her journey—spread across another ten episodes—can feel somewhat grueling.

The introduction of flashbacks allows Silo to breathe, to adopt a different rhythm, and to deepen its overarching mythology. By focusing less on the granular mechanics of power within Silo 18, the “past” storyline cuts more directly to what matters most: the connection between timelines, what happened in the intervening centuries, and whether the outside world is truly as lethal as the authorities claim. In both timelines, however, the heaviest theme remains the control of information—and how it is weaponized to keep entire populations in check.