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.

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.