8.4

Slow Horses•Season 6•Episode 4

Lost & Found

8.4/10 · 1,521 votesOct 7, 202650 min

Ranked #2 of 6 in Season 6•+0.2 vs season avg

Discussion

Lamb tries figuring out who Frank is working for. Sid, River, and Coe do everything to evade the hit squad.

Directed byAdam Randall

Written byJonny Stockwood, Mark Denton

Previous episodeE3 · Resurrection Next episodeE5 · Sayonara

Seasons6

All 1 2 3 4 5 6

Season 6 Episodes6

Circle of Life

Daddy Issues

Resurrection

Lost & Found

Sayonara

Judgement Day

Cast7

Gary Oldman

Jackson Lamb

Jack Lowden

River Cartwright

Kristin Scott Thomas

Diana Taverner

Hugo Weaving

Frank Harkness

Saskia Reeves

Catherine Standish

Christopher Chung

Roddy Ho

Aimee-Ffion Edwards

Shirley Dander

Crew5

Jonny Stockwood

Writer

Mark Denton

Writer

Adam Randall

Director

Robert Frost

Editor

Khemaïs Moussa

Special Effects Coordinator

Discussion

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Episode Summary

"Lost & Found" is episode 4 of Slow Horses season 6. It scored 8.4/10 from 1,521 votes, ranking #2 of 6 episodes this season (season average 8.2). Directed by Adam Randall and written by Jonny Stockwood, Mark Denton, it aired on October 7, 2026.

Next: E5 · Sayonara Best of Season 6