Silo: What happened in season three, episode six - 'The Drive'?

Read a full recap of Silo's episode 'The Drive'

Silo, season three, episode six
Author: Anna Sky MagliolaPublished 7th Aug 2026

With the release of season three, episode six of Silo, we are now into the second half of the season, which has given viewers further insight into the Before Times, the dirty bomb dropped on the US and how they retaliated.

Now as heads clash in this episode, we find out what's stopping Knox and Shirley volunteering to go to Silo 17 to save the children stuck there, and why Robert and Camille Sims are struggling. Helen and Daniel also finally arrive in their out of control car at an unknown destination.

READ MORE: Silo phrases explained - All the key terms you need to know

Episode six - 'The Drive'

Juliette starts to get some of her memory back after handling the pez, remembering her meeting with Jimmy (from Silo 17). Lukas then reveals that there are lines coming from outside into IT and Judicial, with Bernard adding the lines coming into IT carry electricity from Silo 1, “so if the generator stops there’s always power in IT.”

Sheriff Billings then opens up to Hank about what he’s found out about the thefts from Critical Supply, when Hank suggests maybe the person behind the light bulbs theft is behind Orla’s murder.

Back in the Before Times, Helen and Daniel are still struggling to control the car, even after removing the key. Now travelling at 70mph, Helen turns her handbag inside out trying to find something with a “flat edge”, when the pez Daniel gave her on their ‘date’ falls out of the bag.

Juliette enters The Vault with Camille, and asks The Algorithm if she can go back to Silo 17 to save the kids she met when she was there. After having several attempts to get The Algorithm to agree to the request, she then said she’ll go back on the memory drug, before the voice asks how many children there are.

Silo, season three, episode six

Still in the out-of-control car, Helen has an idea to hide in the back of the car, so people see a driverless car, and hopefully raise attention. The pair are then joined by a number of cars with flashing lights, which turn out to be their escort to an unknown destination.

After Billings and Hank question Mark (from the Down Deep) in exchange for information about the supply thefts, they go to ask Knox about his dad’s involvement, but get nowhere after Knox refuses to answer Billings’ questions. Knox later goes to the Mines to find his dad, sadly being told that he died two years before.

Still intent on solving Orla’s murder, Hank and Billings go to the camera room, where they find Glenda in supply, and going to the mines just 10 minutes apart, something that wouldn’t be possible.

Juliette then asks Shirley if she’ll go to Silo 17, not knowing that she’s expecting Knox’s kid. After Shirley and Knox have a heated argument they agree on both of them going together, but The Algorithm has something else in mind.

Camille later confronts Juliette when she says she wants to send Knox and Shirley to Silo 17. Juliette then suggests Lukas and Patrick, knowing that Camille wants them dead, but doesn’t know where they are.

Camille and Juliette then go to The Vault, and Juliette asks The Algorithm if Shirley and Knox can go, but her request is denied, eventually suggesting Lukas and Patrick. Her request is accepted and she leaves The Vault, however, The Algorithm continues talking to Camille saying that Lukas and Patrick won’t make it to Silo 17, telling Camille to add Vitamin D+ to the water supply "as soon as possible". Camille then confirms that Vitamin D+ entered the water system two hours before.

Finally, Helen and Daniel are taken in the car to a warehouse, where they are let out of the car, and meet with Senator Rosalind Thurman, who says: "How'd you like to help save the world?".

Silo, season three, episode six

What's happened in Silo season three so far?

If you aren't up to speed on everything that's happened in Silo season three, then make sure you check out our episode by episode guide.

Season three, episode one recap

Season three, episode two recap

Season three, episode three recap

Season three, episode four recap

Season three, episode five recap

Take a look through words and phrases that you might not know in Silo:

Going out to clean

Going out to clean in Silo its basically a death penalty. Residents of the Silo who go out to clean don't come back alive. They are sent out for two reasons, either because they break the law or they ask to go out voluntarily.

When they are outside, they clean the lens on a camera that displays on the screens in the cafeterias. Over time the lens gets covered in dust and debris from the toxic wasteland the residents of the Silo can see.

SPOILER! (Juliette is the only person so far to come back alive)

Up Top

The Silo consists of 144 levels, and they are connected by a single spiral staircase, there are no lifts. It is split into three main sections. Up Top is where the primary government offices, the Sheriff's station, and the surface airlock are situated.

The Mids

Below Up Top is The Mids, where many of the residents live along with the schools, and The Farm that grows food for the population. It also houses the Mids Medical, where Juliette's dad, a doctor, oversaw the nursery.

Down Deep

At the bottom of the Silo is the Down Deep. The people who live down there and keep the generator going rarely go up to The Mids or Up Top. There are many Deputy stations throughout the Silo, but the Down Deep Deputy Station is where Deputy Hank Murphy is charge. He is good friends with Juliette and Knox who work on the generator.

The Mines

Being sent to the mines is seen as a punishment for those who break the law. Iron ore was mined from The Mines, which are dirty and full of rats. Lukas Kyle is banished to The Mines for not reporting Juliette's relic.

The Digger Void

The area around the digger that was used to build the Silo is called The Digger Void. In the Digger Void is a camp made by George, where he hides a few relics, later Bernard is found hiding there, after many believed he had died.

Shadow

Someone's shadow is like their deputy, they are expected to learn from their mentor. In one of the early episodes Juliette gets a shadow called Terry Cooper. Juliette was previously Knox's Shadow, when she first transferred from The Mids.

The Algorithm

A select few from the Silo ever encounter The Algorithm, a voice that speaks to certain people about the Silo in a bright room with stepped walls. Although the subtitles call this voice The Algorithm it isn't referred to by the characters as such, and many don't know of its existence.

The Farm and 'going to the farm'

The Farm refers to the many farms in the Silo, where they grow crops and have animals such as pigs and chickens for the 10,000-strong population.

However, there's a slightly grim feature of The Farm, when members of the population die they can be buried in The Farm, so that their body's nutrients helps to feed the crops.

Before Times

Before the Silo was built was the Before Times - set in the near future (2040s). Not much is known about the Before Times in the first two seasons, with the third season beginning to explore why the Silo was created.

Judicial

Similar to the Sheriff, Judicial help to keep law and order in the Silo, they are responsible for enforcing The Pact and confiscating any relics.

Relic

Something from before the Rebellion. It's illegal to be in possession of a relic and knowing that someone has one and not reporting them can also be a punishable offence.

The Pact

The Pact is a book that the rules of the Silo are set out in. Several characters refer to The Pact throughout the series and how they must follow the rules.

The Rebellion

140 years before Silo is set there was a Rebellion when the residents of the Silo stormed the upper levels wanting to open the door to the surface and poison the entire Silo with air from outside. The Rebels burnt all the books, computer drives and anything from the Before Times.

Safeguard

A hidden pipe system which can flood the Silo with toxic gas. Use of it is designed to end the entire Silo's existence, but it isn't controlled by Silo 18, instead it is controlled by the overseers of Silo 1.