The cast of Silo admits they sometimes lose track of the show’s labyrinthine plot. With multiple timelines, memory-wiped characters, and non-chronological filming, even showrunner Graham Yost has made the occasional blunder. As the Apple TV+ thriller returns for its final season, the team revealed how they managed to keep everything on track.

Rebecca Ferguson and the Silo cast reveal how they tracked the story

One mistake surfaced when an actor pointed out that a conversation scheduled to be filmed logically should have already happened. Another came from the Japanese localization team, which noticed that a subtitle clashed with the action unfolding on screen. Yost’s response was, “Oh shit, you’re right.”

“That sense of collaboration” now underpins the entire production, Yost explained to The Verge. As Silo barrels toward its conclusion, the responsibility of tracking every storyline falls on the entire team. Season 3, which premieres today, July 3, expands the narrative by cutting between the underground world viewers know and a present-day timeline where the decisions that ultimately sent humanity underground first took root.

Juliette, played by Rebecca Ferguson, enters the new season as the first person to cross between silos. She also experiences memory loss. Combined with a shooting schedule that rarely follows chronological order, the cast faced a genuine challenge.

To help maintain continuity, Ferguson relied on the hair and makeup department, which tracked scars, burns, and other physical details across fractured timelines. She described those small details as essential, saying, “The little changes that you do have enormous ripple effects going forward.”

Furthermore, Alexandria Riley, who plays Camille Sims, described how morning sessions became an essential part of the process. “A lot of days, we’d start the day with story time, and the director would go through where we’re at, where we just came from, what happens next,” she said. “It’s already a complicated story anyway, but then when shooting out of order, you do get a bit foggy.” Even Common, who plays Robert Sims, set aside time to discuss scenes with Riley, “just to be reminded.”

Now, fans can see how everything comes together as Silo Season 3 streams exclusively on Apple TV+.