Det Sergeant Emer Berry of the CAB leads a raid on a criminals house in Co Clare, while there, She discovers deeds and diamonds linking the Homeowner to a terrorist attack in Antwep.

Darren's killers escape, while Christian tells Emer further bombings are expected. Billionaire Richard Melnick shows the Antwerp site for his new European headquarters to his son

Diamonds are found in Fionn Brannigan's offices and Emer links this to the bombings and warns him his life is in danger. Christian learns Hadi has been beaten by a fellow officer

Emer heads to Antwerp to help search for Fionn Brannigan, but just as the case seems to have hit a dead end, the discovery of a body and a forensics breakthrough changes everything

While her team follows the money trail in Ireland, Emer and Christian discover the identity of the bombers. An unexpected source provides the investigation with vital information

With Bibi now in custody, Emer and Christian face a desperate race against time to stop the final bombing and uncover who was really behind the terror campaign