Paroxocybin

Summary

Section D is forced to welcome an FSB officer onto the Grid to help track down Aibek, a rogue nationalist from the ex-Soviet state of Azakstan. Aibek is in the UK to find the last known sample of the nerve agent 'Paroxocybin'. The chase is on, but will the team find a way to stop the nerve agent falling into the wrong hands without ruining Anglo-Russian relations? Meanwhile, Lucas's personal life takes a passionate turn.

Guest stars

• Simon Russell Beale as Home Secretary
• Iain Glen as Vaughan Edwards
• Laila Rouass as Maya Lahan
• Jonathan Aris as Azis Aibek
• Julian Lewis Jones as Viktor Barenshik
• Tom Marshall as Nurbeck Omosheva
• Donald Sumpter as Stephen Kirby
• Amanda Hale as Meg Kirby
• Nicholas Sidi as Russian Ambassador
• Kirsty Wark as Newsreader