When British soldier Shaun Emery is accused of a crime he strenuously denies, newly promoted DI Rachel Carey is assigned to investigate.

After key evidence is mysteriously redacted from her investigation, Carey is forced to find other ways of pursuing Shaun, who is searching for answers of his own.

The stakes intensify for Shaun when he comes face to face with inscrutable CIA agent Frank Napier, whilst Carey’s investigation appears to hit rock bottom.

Carey develops a theory as answers begin to reveal themselves, and Shaun finds himself trusting an enigmatic stranger who promises to lead him to the truth.

Surrounded by the architects of his downfall, the truth behind what happened to Shaun is revealed to him in precise detail. Meanwhile, Carey seeks for answers of her own and uncovers the complex conspiracy that is Correction.

Carey teams up with Shaun Emery to try and expose Correction, but Napier is one step ahead. Shaun’s future, and that of the nation’s system of justice, lie with one person. Carey has a decision to make.

Invisible assassins stalk London, and DCI Rachel Carey is drawn into a case involving a rising politician that brings greater risks than she first imagines.

In the wake of a shocking broadcast hack during an interview with Isaac Turner, Carey must work out who is responsible and whom she can trust.

In the aftermath of a television hack, a major suspect makes a getaway. Time is against DCI Carey as she tries to act before the invisible assassins strike again.

DCI Carey hunts a suspect and the investigation widens its focus. Isaac Turner’s family life begins to fall apart, but then he stumbles upon a lead.

Will Isaac Turner meet his digital doppelgänger? DCI Carey pursues a risky new suspect – will she finally find out who is behind everything?

The net tightens. After DCI Carey is kidnapped, her instincts are proved right – but she’s in more danger than ever before, while Isaac Turner pursues his own agenda.