In the aftermath of the devastating 7/7 London bombings, another terrorist cell plots an attack.

In the aftermath of the devastating 7/7 London bombings, another terrorist cell plots an attack.

A police surveillance operation ends in tragedy after an innocent tube enger is shot dead.

A police surveillance operation ends in tragedy after an innocent tube enger is shot dead.

As the Met grapples with the fall-out from the shooting, a secretary makes a life-changing decision.

As the Met grapples with the fall-out from the shooting, a secretary makes a life-changing decision.

With the police force engulfed in crisis, senior officers are confronted with hard truths.

With the police force engulfed in crisis, senior officers are confronted with hard truths.