<span>As the door slowly creaked open, Jessie peered carefully into the vast darkness, holding her breath.
The "slowness" of the creaking door and the "vast darkness" add a weight to the sentence unlike the others. </span>
Answer:
The Greasers?
Explanation:
I think the only "gang" in the outsiders is the greasers could be wrong though
I doubt that it is really wise to rely on the help from the people who are not specialists in it. I had a similar task and I need to confess that I asked the writers from "Marvelous Essay" to help with that. The result was even better than I have expected.