back."
 
 Even though I do.
 
 "Oh, really? " Trey said, his eyes dancing. "Then why are you asking? "
 
 I took a deep breath and waited for a pair of guys from Drake to lumber their way up the stairs to
 
 the library doors. "I think she might have killed Cheyenne," I whispered.
 
 At this, all the mirth dropped away from Trey's face. "What?"
 
 "It's just a theory right now," I explained. "I'm trying to gather information--"
 
 "No. There's no way," Trey said, shaking his head. "Those two used to be best friends. Ivy would
 
 never have hurt Cheyenne."
 
 "You don't think?" I asked. "Even after their... falling-out?"
 
 "No way." Trey was adamant. Which, considering how convinced
 
 62
 
 I was, kind of got under my skin. He leaned back next to me again. "Sorry, Nancy Drew. I think
 
 you're way off on this one. Even though they were hanging out with different crowds when
 
 Cheyenne died, I think there was always a connection between them, you know?"
 
 I didn't know what to say... what to ask. I had been so sure that he would agree with me on some
 
 level that I was totally thrown. Trey looked down at the concrete steps and pushed at a wilted
 
 brown leaf with the toe of his boot.
 
 "I still can't even believe this is happening," he mused quietly. "I mean, it's psychotic, thinking that
 
 someone on this campus might have killed her." He glanced sidelong at me and adjusted his
 
 books. "Would you believe the cops have questioned me five times already?"
 
 I blinked, stunned. "Five times? Why?"
 
 "I am the ex-boyfriend," Trey reminded me, lifting his shoulders. "Cops love that shit."
 
 "Right."
 
 "Luckily I have an airtight alibi," he said. "So they finally gave up."
 
 "Really?" I asked, trying to sound like a moderately interested friend, rather than a person who
 
 had anything riding on said alibi. But suddenly all I could think about was how happy I would be to
 
 officially cross Trey off the suspect list. "What is it?"
 
 Trey took a deep breath and looked out across the evergreen bushes that lined the steps. "Well,
 
 actually, Josh was having a hard time sleeping, you know, after you and he..."