What to Expect from Slow Horses Season 6 Episode 4: Lost and Found
River, Sid, and Coe will have to fight off the two assassins again on Slow Horses Season 6 Episode 4, “Lost and Found.”
It’s unclear how exactly they found the trio again, but at the end of Slow Horses Season 6 Episode 3, “Resurrection,” they arrived at the very same location Sid, River, and Coe did.

Sid wants to make a call to Diana, which still seems like a very bad idea. While you would think that first desk would be able to provide some assistance, she’s got a whole host of problems after her disastrous interview. Helping Slough House might not be at the top of Diana’s to-do list, even if Sid is in danger.
Meanwhile, Shirley, Moira, Louisa, and Catherine are on their way to the safe house, while Jackson and Roddy are off handling something else. By the looks of the released photos, Jackson is going to meet up with Frank for a quick bite at a Shake Shack. That is sure to go over well.
Here’s everything you need to know about this episode, including the air date, cast, and photos.
Slow Horses Season 6 Episode 4 Details
- Title: “Lost and Found”
- Air Date: Wednesday, October 7, 2026
- Network: Apple TV
- Writers: Mark Denton and Jonny Stockwood
- Director: Adam Randall
- Main Cast: Aimee-Ffion Edwards, Tom Brooke, Christopher Chung, Sir Gary Oldman, Jack Lowden, Saskia Reeves, Ruth Bradley, and Kristin Scott Thomas
- Notable Returns: Olivia Cooke as Sid, Hugo Weaving as Frank, and Rosalind Eleazar as Louisa

Slow Horses Season 6 Episode 4 Description
Lamb tries figuring out who Frank is working for. Sid, River, and Coe do everything to evade the hit squad.
Photos
Check out the photos from Slow Horses Season 6 Episode 4:







What are your hopes for this episode of Slow Horses? Share your thoughts with us in the comments below, and be sure to catch up with our review of Slow Horses Season 6 Episode 3, “Resurrection,” right here.
New episodes of Slow Horses premiere Wednesdays on Apple TV.
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