‘Slow Horses’ Season 6 Episode 4 Release Date, Time and Where to Watch as Slough House Braces for Its Next Big Test

Gary Oldman’s rumpled spy chief is back on Apple TV, and the sixth season is moving fast toward its final stretch. Apple releases one episode each Wednesday, which means the next chapter is only days away from landing.

If you are counting down to ‘Slow Horses‘ season 6 episode 4, you are in good company. Fans of Jackson Lamb and his team of disgraced MI5 agents are already wondering how much trouble Slough House can survive, so here is what we know about the release date, release time, where to watch and what the preview details suggest.

Episode 4 Release Date and Weekly Schedule

The fourth installment of the season is called “Lost and Found,” and it is set to arrive on October 7, 2026. Adam Randall directed the episode, the same filmmaker credited on the episode that arrives just before it.

The season keeps a tight, weekly rhythm. It has six episodes in total and wraps with its finale on October 21, so the wait between chapters never drags for long.

Looking further ahead, episode five is titled “Sayonara” and lands on October 14, while episode six is called “Judgement Day” and closes things out on October 21. That leaves only two more stops after “Lost and Found” before the season bows out.

There is one thing to keep in mind if you want to stay spoiler free. Episode three, titled “Resurrection,” arrives on September 30, so you will want to catch up on that one before the next drop.

Release Time for Apple TV Viewers

Here is where things get a little fuzzy. Apple confirmed the premiere date but never shared an exact release time, so viewers have had to rely on past patterns.

According to one outlet, it is a pattern for Apple to release episodes the night before, with a 9 p.m. ET start, which works out to 6 p.m. PT. Another report noted that Apple has not announced a release time and that a Tuesday night rollout should be treated as expected rather than guaranteed.

For fans in Europe, that Tuesday evening pattern would mean the episode could show up late at night or in the early hours of Wednesday morning. Your best bet is to check the Apple TV app on release day, since the platform can adjust timing without much warning.

Where to Watch the New Season?

The answer is simple. The show streams on Apple TV globally, and new episodes land each Wednesday until the finale. There is no need to hunt across multiple platforms, since every episode lives in one place.

The season also carries some extra weight for book fans. This is the first season of the series to adapt more than one Mick Herron novel, pulling from Joe Country and Slough House. That double duty helps explain why the pace feels so brisk.

If you are just catching up, reported runtimes for the first five episodes sit between 46 and 50 minutes, with the finale running a full hour. That makes a midweek binge of the earlier chapters very doable before the next episode arrives.

Episode 4 Preview and What Comes Next

As of now, the official plot details for “Lost and Found” are still under wraps. The episode summary is listed as to be announced, so anyone promising a full breakdown is guessing.

What we can say is where the story stands. Apple’s official logline describes the team on the run as Diana Taverner drags them into a high stakes game of retaliation and revenge. That sets up a season built on paranoia and shifting loyalties.

The lead in from the previous chapter offers a few clues. Episode three sees former Slow Horses return to the fold as assassins close in, while Taverner deals with the fallout from her TV interview. Whatever cliffhanger that leaves behind will likely shape the tone of the next episode.

The cast keeps the stakes high too. Hugo Weaving returns as Frank Harkness, a character first introduced in season four, which is a reminder that old enemies rarely stay buried in this world.

Fans can also relax about the long term future. A seventh season is already on the way, so the end of this run will not mean goodbye for Lamb and company.

With assassins circling, Taverner under pressure and a title like “Lost and Found” hinting at something or someone resurfacing, who do you think Slough House is about to lose, and who might turn up when they least expect it, once the next episode drops?