The pair then take Toby back to a point in the trail where he got confused, allowing the hound to follow another scent towards a boat yard. It appears that a man by the name of Mordecai Smith runs the yard, hiring boats out by hour or day. 

Sherlock then uses his powers of acting in order to gain information from a woman nearby, who is trying to beckon her son in for a wash. He discovers that Mordecai Smith is currently unavailable, left on a steam launch with a one-legged man. Sherlock then source is the name of the steam launch from this woman: The Aurora. 

Whilst discussing matters with Watson, Sherlock concludes that you must use the Baker Street Irregulars in order to aid him in this investigation. The Baker Street Irregulars are a group of street urchins who report back to Holmes with information they garner. 

After having a bath, Watson observes an amusing headline in a newspaper that Sherlock shows him, a headline that praises the work of June, the fatheaded detective. 

Then, after meeting the Baker Street Irregulars, Sherlock instructs them to keep close observation on all docks in the London area for their Aurora and that he will pay them each a shilling per every day they work. The boys quickly get off to work.

Sherlock then states that he will spend some time pondering over the identity of the accomplice. Using a book that informs him of the tribes of the Andaman Islands, he confirms his suspicions that the accomplice must have been a native, due to the book’s descriptions, deeming them to be small and savage.