Sgt. David Budd is promoted to a protection detail for UK Home Secretary Julia Montague, but he quickly clashes with the hawkish politician.
After an attempted attack on the school Budd’s kids attend, Montague worries about leaks in the department. But she may be in the line of fire herself.
Montague’s public standing sours further. As Budd feels mounting pressure to spy on her, investigators question his statement about the shooting.
In the wake of another attack, investigators grow increasingly suspicious of Budd, as his state of mind becomes increasingly frayed.
Budd starts putting the pieces together about who could have been behind the bombing. But those same people may be closing in on him, too.
When Budd’s connection to the shooter is revealed, he becomes a police target. But his reunion with Chanel creates much more serious problems.