‘Slow Horses’ Season 6, Episode 2 Review: Sid Returns And I Have A Theory

Sid returns in Slow Horses Season 6, Episode 2, “Daddy Issues,” as River, Lamb and Taverner uncover a conspiracy targeting Slough House.

<p>Sid returns in Slow Horses Season 6, Episode 2, “Daddy Issues,” as River, Lamb and Taverner uncover a conspiracy targeting Slough House.</p>