The young and ambitious Luke Fitzwilliam arrives from Nigeria with the promise of a job in Whitehall. On the train to London, he meets the elderly Miss Pinkerton, who confides in him that there is a killer on the loose in her village.

	Episode 1
On the train to London, Luke Fitzwilliam meets the elderly Miss Pinkerton, who confides in him that there is a killer on the loose in her quiet village. When Miss Pinkerton is struck down on her way to Scotland Yard, Luke faces a moral predicament.

	Episode 2
As Wychwood reels after another tragic death, the discovery of a crucial piece of evidence blows the investigation wide open and leaves Luke Fitzwilliam questioning who he can trust.