In fact, it's not surprising that Ledley is so vigilant; it's not just because Lewis previously revealed the secret of Yellow Chrysanthemum Street, but also because he is asking around about Sir Arthur Hastings's experiences.
Currently, Scotland Yard is undergoing another major reform opportunity since its establishment in 1829, and this opportunity is closely related to Sir Arthur's destiny.
Since the founding of Scotland Yard in 1829, its father, then Home Secretary Sir Robert Peel, has wanted to expand the jurisdiction of this modern police force that has made outstanding contributions to London's security as much as possible.
Unfortunately, at that time the Wellington Cabinet encountered two major tests, the Catholic Emancipation Bill and the Parliamentary Reform Act, so the restructuring and expansion of Scotland Yard had to yield to these two major issues.
