Starring Richard Madden and Keeley Hawes.

A bodyguard (David Budd) assigned to protecting the Home Secretary (Julia Montague) is tested to his limits when, in the midst of a family break-up, he encounters a wave of terrorism sweeping through the capital. Some of it is aimed at Montague, and as the two get pushed closer together, their once professional working arrangement suddenly gives way to a passionate affair.

Meanwhile, an internal power struggle rages between the police and security services, and the actions of some operatives strike Budd as suspicious, or worse. He attempts to get to the core of the problem, but is out of his depth and doesn't know who can be trusted to help.

For the most part, a well acted and polished drama, although there are instances where both plot and script can be described as slightly incredulous. Budd's mood and character traits are too up and down to be fully believable. Is he the scared, vulnerable and suicidally depressed sort, or is he confident, heroic and self-assured? Well, he alternates between both extremes and it doesn't quite wash.

Fortunately, the final episode is both fast-paced and exhilarating, leaving a good impression overall. 8.1/10