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The Salisbury Poisonings

9. An act of war?

Neil Basu led the Counter Terror investigation.

• 20 mins

The Salisbury Poisonings

10. The Spy Next Door

Sergei Skripal: A man with an unusual past.

• 20 mins

The Salisbury Poisonings

11. Saving the Skripals

The chance encounters that changed so many lives.

• 16 mins

The Salisbury Poisonings

12. The Poisoned Detective

Nick Bailey reveals what it’s like to be poisoned by Novichok.

• 13 mins

The Salisbury Poisonings

13. Science in Secret

The search for answers at Porton Down.

• 20 mins

The Salisbury Poisonings

14. The Hunt for the Poison

Police try to find an invisible weapon.

• 15 mins