Finished Jack the Ripper, and I want to tell you guys this, since I Know someone will bring this up. Ate the end of the case Sherlock asks Watson to write a novel to make the people of Whitechappel forget the Ripper murderers, referencing "The Hound of the Barskevilles". This doesn't make sense. The main events of the novel are set in 1889 and not in 1888 during the ripper murderers. Even so, the year the Sherlock Holmes Novels, Short Stories and Video Games [For the Video Games I will explain better when we will arrive to 1898 with "The Testament of Sherlock Holmes", for the moment just trust me] are canon in universe. For example the novel "A Study in Scarlett" was published in 1887 IRL, This is proven right as in the novel "The Sign of Four" Sherloch references the publishing of the novel as being very recently and is also supported by the fact that Sherlock isn't famous in every story set between 1881 to 1886. So returning on the point, "The Hound of the Barskevilles was published in 1901 IRL. So it's impossible that the publication of this book made the people of whitechappel forget Jack the Ripper. So even if the stry is referenced at the end of the game, we have to assume that Watson will write another novel that isn't the stroy that will be the main events of our season 5.