The series follows John Porter, a former British Special Forces soldier, who is drafted back into service by Section 20, a fictional branch of the Secret Intelligence Service.
Strike Back (Season 4)

Episode 1 (Episode 1) 6.9
Writer: MJ Bassett
Air date: 2013-08-09
Runtime: 45 min
Overview: Enjoying a long-deserved vacation, Scott and Stonebridge are recalled after a fellow Section 20 member dies while pursuing the elusive terrorist al-Zuhari in Beirut. A new lead sends them into the remote jungles of Colombia in pursuit of a known associate of al-Zuhari’s and deep in territory controlled by a powerful drug cartel.

Episode 2 (Episode 2) 6.7
Writer: MJ Bassett
Air date: 2013-08-16
Runtime: 45 min
Overview: Out of options and hunted by the resourceful cartel, Section 20 goes for a longshot and attempts an assault in downtown Bogota, hoping to obtain intel on one of al-Zuhari’s key people. Meanwhile, Dalton looks for the source that exposed her team in Beirut, but discovers a surprising ally and a piece of al-Zuhari’s plan.

Episode 3 (Episode 3) 6.6
Writer: James Dormer
Air date: 2013-08-23
Runtime: 45 min
Overview: Although they are uncertain of others’ loyalties, the team must work with an asset in Beirut to get a lead on James Leatherby, a dangerous and unpredictable operative with ties to al-Zuhari.

Episode 4 (Episode 4) 6.7
Writer: James Dormer
Air date: 2013-09-06
Runtime: 45 min
Overview: Section 20 attempts a risky rescue for a potential new ally. Now veering close to the edge, but determined to find the truth, Dalton goes AWOL with a detainee.

Episode 5 (Episode 5) 6.6
Writer: John Simpson
Air date: 2013-09-13
Runtime: 45 min
Overview: While recovering from a shocking turn of events, Section 20 faces a different threat: a new enemy joining forces with an old one. Locke draws Kamali in closer to the team. Scott looks for an old friend, while Stonebridge gets closer to a new one.

Episode 6 (Episode 6) 6.7
Writer: John Simpson
Air date: 2013-09-20
Runtime: 45 min
Overview: Section 20 is torn between devoting their resources to the mission or saving one of their own. Stonebridge's health continues to affect him in the field. Al-Zuhari's network moves forward quickly, striking close. Kamali explains why yet another threat is emerging.

Episode 7 (Episode 7) 7.0
Writer: Ben Newman
Air date: 2013-09-27
Runtime: 45 min
Overview: The team tracks stolen property to Russia, where Scott and Stonebridge continue their side careers as "outlaws." As Stonebridge's health continues to deteriorate, they discover new mysteries about a piece of Al-Zuhari's plan. Kamali worries that his cover identity may not hold.

Episode 8 (Episode 8) 6.7
Writer: MJ Bassett
Air date: 2013-10-04
Runtime: 45 min
Overview: Scott looks for an escape from Black Bear Prison, while Locke becomes suspicious of Kamali. The team races to locate Stonebridge, whose condition grows more dire when he encounters Al-Zuhari's plan firsthand. Continuing his vendetta, Ulyanov closes in on Scott and Stonebridge.

Episode 9 (Episode 9) 8.5
Writer: Richard Zajdlic
Air date: 2013-10-11
Runtime: 45 min
Overview: Scott and Stonebridge try to keep their promise to protect Ester; Richmond and Martinez follow an Al-Zuhari associate; the team sets out to stop an infiltrator before he reaches a populated area.

Episode 10 (Episode 10) 7.1
Writer: Richard Zajdlic
Air date: 2013-10-18
Runtime: 45 min
Overview: Scott and Stonebridge face a new pivotal player in Al-Zuhari's plan, and with an imminent attack looming, the team resorts to questionable measures, sparking conflict within the unit.

Seasons

Episodes 6

Episodes 10

Episodes 10

Episodes 10

Episodes 10

Episodes 10

Episodes 10

Episodes 10

Episodes 6