Chapter Thirteen: "When they had reached the waterfall, they heard gunshots. The first sounded like a firecracker, then two more. Screams. Glass breaking. The whole situation was foreign, like Greg was watching someone else’s life. Someone braver. The fourth shot was louder, closer, and Caroline began sucking in huge breaths. She was going to hyperventilate. Greg pulled the woman under, then through the water, and they put their backs against the faux stone wall. He felt something dig into hi...