The official synopsis reads: “Harry Pearce (Peter Firth) has spent 10 years walking the corridors of Thames House and dodging threats, but as Spooks celebrates a decade on our screens, the future of the MI5 chief is in jeopardy. A huge secret, hidden deep in his past emerges, threatening to destroy him and those close to him. Will Ruth Evershed (Nicola Walker), the woman he loves, stand by him, or is this the end for Harry? And, more importantly, can Section D survive without its leader?”

It continues: “As tensions rise in the Middle East and the UK’s special relationship with America falters, Britain is forced to befriend the new heavyweights on the global scene, none more so than Russia, forcing Harry to revisit old relationships made during the Cold War. Is it time for him to confront his demons and head back into the cold? Will he be able to return?”

Kudos have also announced four new cast members for Series 10, including Lara Pulver (True Blood, Robin Hood) and Geoffrey Streatfeild (Ashes To Ashes).

> Buy the Series 9 boxset on Amazon.

The BBC’s Christopher Aird added: “Spooks is consistently one of the most intelligent, entertaining and action packed shows on television. It is testament to the huge talent of the creative team over the years that the 10th series is in production. We are very excited; the 10th series of Spooks will deliver everything its devoted fans expect and much they do not!”

Watch a clip from the Series 9 finale…