In season 4, a bombing detonates personal secrets, rocking Slough House’s already unstable foundations.
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Episode 1
Identity Theft
A London bombing puts Taverner under pressure. When River grows concerned for his grandfather, Louisa encourages him to go for a visit.
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Episode 2
A Stranger Comes to Town
A naive agent makes a discovery about the Westacres bomber. Lamb suspects that David knows more than he's letting on.
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Episode 3
Penny for Your Thoughts
River is trapped in France. Back at Slough House, the Dogs have come for Lamb.
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Episode 4
Returns
Taverner is desperate to hide dangerous secrets. River seeks answers at his grandfather's house.
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Episode 5
Grave Danger
Lamb questions David about France as River comes face to face with the enemy.
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Episode 6
Hello Goodbye
Impossible decisions are faced and sacrifices are made.