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

Claire is new to the fold as the lead Detective Sergeant in charge at the Criminal Assets Bureau (CAB) and faces a sudden challenge.

DS Claire Wallace and CI Christian De Jong are shocked to discover who was behind the terrorist attacks, but as the body count grows, will they be able to prove it?

Bibi Brannigan's life hangs in the balance when a hitman arrives in Ireland. A PR disaster threatens Frances Swann's plans, forcing her to take drastic action.

In the aftermath of a chilling attack in Ireland, Claire heads to Antwerp to make contact with a key witness. When Christian hits a dead end in his investigation, help comes from an unexpected source.

As Claire and Christian close in on hard evidence connecting Trestford to the bombings, Frances Swann executes a callous plan to force Bibi to Antwerp.

In this gripping series finale, Claire and her CAB team are in a race against time to finally unmask those behind the terrorist bombings before the Antwerp port deal is signed. But their breakthrough comes at a very heavy price.

When investigative reporter Olatz Alzola and her family are brutally murdered in Bilbao and DS Claire Wallace is drawn into a case that links their killings to a CAB raid in Ireland.

Claire questions Alice, who reacts angrily, Jon and Claire identify Adam and visit his student residence, only to find it trashed by O'Neill. CAB Detective Liam Boylan uncovers CCTV footage of a man arguing with Nick and forensic accountant Norah Dillon discovers Nick was funneling money into a Liechtenstein account.

An envelope Adama sent to his supervisor, Romero, goes missing.

Bruno is caught by police at Sanihaz, the medical waste facility Olatz had visited. He claims his cousin Tomas was responsible for the people-smuggling and murders.

O'Neill is hospitalised due to exposure to medical waste. Police raid haulage company KYV, where O'Neill worked as a driver on Pearse's recommendation

Tipped off, Pearse diverts the truck, but the police seize the drugs as they're unloaded. Niamh admits Tar Le used KYV to remove waste, but denies knowledge of the drug smuggling