- 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)
- Rosalind Eleazar (Louisa Guy)
- Aimee-Ffion Edwards (Shirley Dander)
Slow Horses — S6E2
Episode: Daddy Issues
Air Date: 2026-09-23
Runtime: 47 min
Overview
The reemergence of Frank Harkness and a suspicious string of murders put Lamb and team on high alert.