Answer:
It provides suspense by implying that the youth may
not be what he seems.
Step-by-step explanation:
When Faxon encountered Rainer on page 5, he thought that Rainer had an ulterior motive and was suspicious of him. This created suspense.
Faxon later found out that Rainer, the man in furs actually had his best interests at heart.
The two got so close that in Chapter 5, Faxon was so devastated by Rainer's death that he was depressed and close to death himself.