Oliver's Travels S01 E02 Land of My Fathers

"An eccentric professor and a policewoman pursue criminals and find love."

Though Oliver is bound for the Orkneys to find Aristotle, Diane declares she is only going as far as Shrewsbury. But after some successful undercover work there, Diane decides to travel a little further with Oliver. He takes her to the deserted mining town where he grew up. Then she takes over the wheel.