Silo Season 2s twisty ending, explained

OK, deep breaths. That was a lot to unpack.

The Silo Season 2 finale had multiple threads to follow, most of which led to more questions than answers. So let's unpack what answers we do have, and speculate on what might be coming in Season 3.

From the fate of Juliette (Rebecca Ferguson) and Bernard (Tim Robbins) to that weird pre-apocalypse flashback, we've broken down the finale below.

What happens at the end of Silo Season 2?

Multiple cliffhangers, plus an unexpected flashback!

Like the second season as a whole, the finale jumps between key characters like Juliette, Bernard, Lukas (Avi Nash), Shirley (Remmie Milner), Knox (Shane McRae), and Sims (Common). As rioters finally reach the top of the silo, hellbent on getting answers from Bernard, they see Juliette reappear on the camera outside and warn them not to come out. But as she runs down the stairs towards the airlock she's met by Bernard, coming the other way with a gun. The two of them discuss how to save the silo from the ominous safeguard procedure (more on that below), before they find themselves trapped between the airlock doors as fire engulfs them.

Elsewhere, Sims visits the vault after confronting Lukas. The same robotic voice that spoke to Lukas in the tunnel addresses Sims, agreeing with his statement that he "wants to save the silo" before telling him and his son to leave the vault. "Camille can stay," the voice says, referring to Sims' wife (Alexandria Riley).

Finally, we have a flashback in which two people meet for a date in a bar, before the days of the silo. It eventually becomes clear that the man is a Congressman and the woman is a journalist, trying to get answers from him about a possible "radiological attack on the Unites States." Eventually he leaves, but not before giving her a gift he picked up on a whim from a nearby store: what appears to be the same duck-shaped Pez dispenser that appears as a "relic" in Silo Season 1. Intriguing!

So what is the safeguard procedure?

It was a major question in Season 2, episode 9, and in the finale we finally get the answer. When Juliette encounters Bernard leaving the silo, their conversation makes it clear that the safeguard is a way for someone outside the silo to pump in poison.

"There's no point what you're trying to do: Save them. It's out of your hands, it was never in your hands, in my hands, in anyone's hands," says Bernard.

"Because of the poison they can pump in?" responds Juliette.

"You know about that?"

"I know about that. But I don't know who'd do it, and I don't know why."

"I know the who. But I don't know why and I don't fucking care."

Presumably the "who" is the owner of the voice that threatens Lukas with the safeguard in episode 9. But who exactly that owner is — whether some kind of sentient AI or ultimate Head of IT — will be a question for Season 3.

What will happen to Sims and his family?

The voice in the vault that responds to Robert Sims claims to want to save the silo, too — but how do we know if it's telling the truth? On the one hand, you could argue that it surely wouldn't even engage with Sims if it didn't want to save the silo. On the other, we know that Juliette has a plan in place for stopping the safeguard. Maybe the poison takes time to pump in? Perhaps the owner of the voice is aware of this, and is planning to use Sims' family to stop Juliette from getting in the way of its plans?

One thing that does seem likely, though, is that the owner of the voice intends to work with Camille Sims, rather than her husband. Maybe, based on its observations of the silo, it thinks she's the more capable family member?

Will Juliette and Bernard survive the fire?

Juliette and Bernard aren't in a great spot at the end of Season 2, and that's putting it mildly. As the airlock doors closes Bernard throws himself to the ground, and when the fire starts pouring into the cramped chamber Juliette does the same. But is there any way either of them can have survived that?

Well, maybe. Let's not forget that Juliette is actually wearing a fire suit. Although she's not as quick to duck down as Bernard, that should offer her some protection.

If either of them is going to die, Bernard seems the most likely. He drops to the floor quickly, but that may not be enough to save him — especially now that he's no longer the show's main villain.

What's the deal with that flashback?

From all the clues we're given, it seems fairly obvious that the flashback at the end of Season 2 is meant to take us back to the silo's origin. The Congressman is from Georgia, for starters, and it's heavily implied that this is where the silos are located (the travel book relic from Season 1 references Georgia, for instance, and the skyline beyond the silo resembles that of Atlanta).

The scene we witness also implies that the threat of war is looming, or possibly already here. The Congressman has to pass a radiation checker before he enters the bar, there's talk of a dirty bomb and a threat from Iran, and there's the journalist's mention of a possible "radiological attack". The silos may be already under construction at this point, for all we know. Perhaps the Congressman even has knowledge of the project.

So, will we see these people again? Will Season 3 be peppered with flashbacks that tell the silos' origin story? At this point it's impossible to say, but it certainly seems possible. Maybe the journalist will end up being one of silo 18's first occupants — the Pez dispenser certainly hints at this — and maybe, just maybe, the Congressman will be revealed as one of the fabled founders.

How to watch: Silo is streaming now on Apple TV+.