Nick Davies (David Tennant), a freelance journalist for The Guardian , investigates the use of phone hacking by the News of the World and The Sun  newspapers. While Detective Chief Superintendent Dave Cook (Robert Carlyle) re-investigates the 1987 murder of Daniel Morgan, one of the Metropolitan Police Service's more troublesome unsolved cases, and one with links to the hacking scandal. The hacking scandal is one of those stories that gripped all of the UK, with equal parts fascination and outrage. Not only were the practices outrageous, so were the lengths that a certain few went to in order to cover them up. That is what Nick Davies found himself up against when he received a tip from an anonymous source as to the scale of the illicit operation being run by the News of the World . He was the first to report on the story, and The Hack  captures what an uphill struggle it was for him to force it into the light. All of which makes him the perfect person - through David Tennant...