Final answer:
Dupin is discussing his actions and motivations regarding a certain matter and explains his objective and support for the lady involved. The narrator asks Dupin about the situation at hand.
Step-by-step explanation:
In lines 61-63, Dupin is discussing his actions and motivations regarding a certain matter.
He explains that he had a specific objective and acted as a supporter of the lady involved.
He also mentions that his attempt would have been risky due to the presence of people loyal to a desperate man who would have potentially harmed him.
The narrator asks Dupin about the situation at hand to understand what they are dealing with.