Slow Horses Season 6 Episode 3 arrives September 30 on Apple TV. Sid Baker’s return forces River to question her survival, loyalties and timing.
Sid Baker
Is Sid Baker Working for Frank Harkness in Slow Horses Season 6? River’s Suspicion Explained
Slow Horses has not confirmed Sid Baker works for Frank Harkness. River’s suspicion grows from her secret return and unexplained long-term survival.