He could hear them whispering amongst one another as if confused with what to do to him.Either a comma after "another" or put "they" in between 'if' and 'confused.
“Follow me,” she repeated. Kyle did, and noticed that there was something familiar about this woman. Her gait, which was largely concealed by her heels, was familiar. Her voice was familiar. “Come on!” she hissed.See brad, on occasions I do like to guess. Here: Ariel?
I know everything. About you. About Jon. I know.”Should it be punctuated like this: "I know everything: about you, about Jon. I know." It just looks awkward how you have it. I think any other way would work better..
He gulped. “Ariel?”