All 16 episodes from the first and second series of the action drama based on the novel by former Special Forces operative Chris Ryan. The first series follows ex-SAS Sergeant John Porter (Richard Armitage) and MI6 officer Hugh Collinson (Andrew Lincoln) seven years after they participated in an operation in which two soldiers were killed. Porter is redrafted to save a British journalist who has been abducted, the Zimbabwe government holds the UK responsible for a plot to kill President Mugabe and a computer hacker kills a number of American troops. The second series (known as 'Project Dawn') follows the efforts of Section 20 agents Michael Stonebridge (Philip Winchester) and Damien Scott (Sullivan Stapleton), as they try to put an end to an international terrorist group after Porter is kidnapped.
In the opening edition, Sgt Michael Stonebridge (Philip Winchester) and former US Special Forces operative Damien Scott (Sullivan Stapleton) are dispatched to recover John, who has been kidnapped by an international terrorist group. In later shows, Stonebridge and Scott search for a wanted woman who is a weapons expert; and a former IRA terrorist and his two allies hijack a van full of cash and kill the driver before retrieving top-secret information.
The series begins with Stonebridge struggling to adapt to a career outside Section 20. In later editions, Stonebridge, Scott and the rest of the team need to escape a Somali warlord's lair; and a search for a nuclear trigger sends Stonebridge and Scott to Niger.
Stonebridge and Scott discover a new threat in the shape of an Iranian terrorist. In later shows, Dalton (Rhona Mitra) tracks down a former MI6 agent in Beirut; Dalton's mistrust of Kamali (Zubin Varla) places Section 20's mission in jeopardy; and Letherby (Dougray Scott) attacks Kamali's home and kidnaps his daughter.