Arthur Conan Doyle appears as Artie, a schoolboy and penny dreadful fan who teams up with Henry Raymond and the Frye twins to solve the murder cases of The Dreadful Crimes.
Artie loves detective stories and follows Raymond to crime scenes. Together with the twins they work through a string of murders across London, and Artie starts to suspect the cases are connected.
Artie gets close to the truth and is abducted. On the palace roof, Raymond holds him as a shield; one twin distracts Raymond while the other comes up behind and kills him. Artie says he will still miss the penny dreadfuls, Jacob suggests he write crime stories himself, and Evie tells him to use his full name.
In the first case, at a Whitechapel warehouse, accusing the obvious suspect prompts Artie to tell you to look past surface appearances and keep digging. The same advice returns as a clue in the final case.
When Artie disappears during Murder at the Palace, his yard holds an evidence wall tying the earlier cases together, ending in an unfinished line that points at Raymond. Dooley, from the first case, explains that Artie wrote important notes in lemon-juice ink that shows up over smoke, and a blank sheet leads on to Purlock Publishing.
Henry Raymond
Henry Raymond is the penny dreadful writer who brings the Frye twins into The Dreadful Crimes, a set of murder investigations across London that he plans to turn into stories.
Frederick Abberline
Frederick Abberline is the Metropolitan Police officer who works with the Frye twins in 1868 and leads the Whitechapel murder inquiry in the Jack the Ripper expansion. In the main game he gives you Bounty Hunts, sending you after Blighter leaders to bring back alive.
Queen Victoria
Queen Victoria gives the Queen Victoria London Stories, in which the twins stop a new Templar faction's bombing campaign. She also hosts the Buckingham Palace ball at the end of the main story and appears in The Dreadful Crimes and The Last Maharaja.