It was a typical morning in London when a powerful bomb exploded in the heart of the city. After the smoke cleared, sole surviving terrorist cell member Farroukh Erdogan (Denis Moschitto) was quickly taken into custody. As preparations for his trial begin, however, the government's plan to use classified evidence to prosecute the suspect leads the Attorney General (Jim Broadbent) to appoint Special Advocate Claudia Simmons-Howe (Hall) to the case. Claudia's unique position as a government-approved defense lawyer ensures that she can review the top-secret evidence, and advocate for full disclosure during the inevitable "closed" session portion of the trial. Once Claudia has reviewed the evidence, however, any communication with the defense team and the defendant himself is strictly forbidden. Later, When Erdogan's lawyer dies just before the trial begins, Claudia's driven ex-lover, attorney Martin Rose (Bana), takes his place. Realizing that their previous affair could jeopardize their involvement with the case, Claudia and Martin vow to keep the relationship a well-guarded secret. In time, however, Martin's exhaustive investigation reveals evidence of a shocking conspiracy that threatens to consume them both.