I'm not familiar with the book but the conflict is usually a fairly easy thing for me to find (I know some struggle with it) what you should do is summarize what you've read. Take that summery and think "alright, the character is facing an issue with_______" (his conscience, another character, society, or nature) and once you summarize it, the rest should be fairly simple. Hopefully this helps.
Answer:
To address uncomfortable or confrontational subjects
Keeps the reader or audience engaged.
Releases tension for characters and the audience or reader
Makes the characters real and multi-dimensional.
Makes your work memorable.
Answer:
Know Lanyon's thoughts directly.
Explanation:
As the reader reads along, he follows Lanyon's line of thoughts and can deduce what Lanyon thinks about the situation. Lanyon reasons that if his friend's (Dr. Jekyll) messenger could go to one place then his friend should have been able to go another place.
Even if there was a problem, he still wondered why he should have received the messenger in secret. He drew the conclusion that he had a cerebral disease at hand. The reader can directly see what Lanyon's are.