Detective Sergeant Emer Berry of the Criminal Assets Bureau led a raid on a house in County Clare. Inside, she discovered documents and diamonds that implicated the homeowner in a terrorist attack in Antwerp.

The perpetrators of Darren’s murder have evaded capture. Meanwhile, Christian informs Emer that further bombings are anticipated. Billionaire Richard Melnick gives his son a tour of the Antwerp facility, slated to become the company's new E…

In Fionn Brannigan’s office, diamonds are discovered, a detail Emer connects to the recent bombings. She cautions him that his life is now forfeit. Meanwhile, Christian learns that Hadi has been assaulted by a colleague in the force.

Emer travels to Antwerp in pursuit of Fionn Brannigan, but as the investigation appears to have stalled, the discovery of a body and a significant advance in forensic science irrevocably alter the course of events.

As her team traced the flow of funds across Ireland, Emer and Christian uncovered the bombers' identities. An unforeseen source then offered the investigation a crucial piece of information.

Now that Bibi was secured, Emer and Christian found themselves in a desperate race against the clock. They had to prevent the impending final bombing and expose the true orchestrator of the terror campaign.