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.

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.

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?

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.

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.

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.

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

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