Slow Horses Season 4 Episode 4
Returns
Taverner is desperate to hide dangerous secrets. River seeks answers at his grandfather's house.
Guest Stars
Saskia Reeves
Catherine Standish
Christopher Chung
Roddy Ho
Rosalind Eleazar
Louisa Guy
Aimee-Ffion Edwards
Shirley Dander
Kadiff Kirwan
Marcus Longridge