CHAPTER EIGHTEEN Riley tried to shake off that unsettling feeling as she and Trudy made their way across the campus. But her sense of being watched wouldn’t go away. The killer felt like an invisible but palpable presence. Riley hoped this outing didn’t turn out to be a bad idea. After all, she and Dr. Zimmerman agreed that the killer was still around somewhere. But now she found herself thinking … It’s been six weeks now. Maybe he’s through killing after all. It seemed only logical. Would a killer who was going to strike again really wait this long? She made a mental note to herself to talk about this possibility with Dr. Zimmerman the next time she saw him. But even if it was true that there weren’t going to be any more murders, Riley was far from satisfied. The monster who had ki

