Karen takes her fight for justice all the way to Downing Street, but it proves fruitless. Fulcher's scandalous actions cost him. Last in the series.
The families of Sian and Becky discover that, despite the confession of Christopher Halliwell, getting justice for their loved ones will not be straightforward.
Detective Superintendent Steve Fulcher takes chief suspect Christopher Halliwell to a remote location to question him about Sian O'Callaghan's disappearance.