Created to coincide with the release of Series 9 on DVD next week, you can join the mission now at becomeaspook.com.

> Buy the Series 9 boxset on Amazon.

“The MI5 Counter-Terrorism Department needs your help to establish exactly who Harry Pearce, the Head of CTD can trust within his team. Section Chief Lucas North has served the Security Services and his country in the past but new evidence has come to light, which suggests he may not be entirely trustworthy. If your initial application is successful then you will be granted access to the Spooks Grid computer system and trusted to delve deep within secret files buried within the internet.”