In this UK-produced mystery series shown on US Public Television, the newly promoted Detective Inspector Hathaway refers to his "walk to Spain" and to the city of Santiago de Compostela. But he did make clear that it was NOT a pilgrimage.
I found this to be ironic as I believe in previous seasons, it was revealed that Hathaway had done time in a seminary. The passage of time and his life's experiences have seen his character grow in a spiritual sense, but also more cynical. I suppose that comes with the job of a homicide detective.
Later in the episode he clearly states he "did not go into the church." Finally, he stated that he walked from the UK (Oxford presumably, as that is where the series is situated) to Santiago, then "...turned around and walked back...." Evidently, he needed time to think after last season ended with a particularly nasty case that affected him personally and led to the retirement of his mentor and friend, Inspector Lewis.
I think I got it correct. I do enjoy this series, and most UK programming.