6.7
8.4
7.0
6.8
6.2
6.6
7.6
6.9
7.6
6.8
7.7
5.2
6.9
6.6
6.8
7.0
7.1
8.1
7.3
6.3
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.