“And she came out of the library,” Regan prompted. “It had just opened, which would be about seven thirty, correct? You had a lab at seven thirty?”

“My lab was at eight, but I usually went early so I could grab coffee and food at the student union on my way. And I just had this idea that she’d done an all-nighter, but I remember thinking she couldn’t have done an all-nighter at the library. She never went to class looking like that. I had the feeling she’d spent the night at the library. Then I thought that was stupid, she was probably returning a book or something.”

There were security cameras at the library, but they didn’t cover the entire interior, and if someone didn’t want to be seen, they might be able to hide from Security until after closing.

Would there still be copies of those tapes, three years later? Regan doubted it. She could ask, find out how long they kept recordings.

Maybe the caller was mistaken about Candace staying overnight in the library, but Regan believed that the anonymous caller had definitely seen her Tuesday morning.

Lucas asked, “Did you talk to campus police at the time? FPD?”

“No,” the caller said. “I forgot about it. Really. And when I found out she was dead, I didn’t know she’d been missing all week. We didn’t have the same friend group, and we only had that one class together that year.”

“Are you still a student?” Regan asked.

“No, but I work in town. I don’t want to get into trouble, but my girlfriend says I won’t. That I didn’t know that what I saw might have been important. And when I listened tonight, and you talked about how we remember things, I was compelled to call. I don’t know how it helps, but I want to do what I can.”

“It helps,” Lucas said, “because it adds one more point on the timeline. Thank you.” He cut off the call and looked at the clock. “We’re nearly at our allotted time for the studio, but I want to remind our listeners that you might not know what is important and what is not. We now have three sightings of Candace Swain after she left the Sigma Rho party. She was in Kingman, Arizona, two hours from campus, on Sunday afternoon. She drove into the Mountain View parking lot at ten that night. And she was spotted outside Cline Library around seven thirty Tuesday morning. Who else saw her? When and where? Call or email.” He rattled off the number and email address.

Lizzy was frantically waving at them. “We have another caller,” Lucas said. He put the phone on speaker. “Hello, are you there?”

There was a long pause, and Regan thought maybe the caller had hung up.