Both girls, I notice, are Jordan Cartwright fans. They have the complete set of Easy Street CDs, plus Baby, Be Mine.

Neither of them owns a single CD by yours truly. Which is no real surprise, I guess. I was always way more popular with the tween set.

Cooper gets down onto his knees and starts looking under the dead girl’s bed. This is very distracting. I try to concentrate on snooping, but Cooper’s butt is a particularly nice one. Seeing it so nicely cupped by his worn Levi’s as he leans over, it is kind of hard to pay attention to anything else, even though, you know, this is very serious business, and all.

“Look at this,” he says, as he pulls his head and shoulders from beneath Roberta’s bed, his dark hair tousled. I quickly readjust my gaze so it doesn’t look like I’d been staring below his waist. I hope he doesn’t notice.

“What?” I ask intelligently.

“Look.”

Dangling from the end of a Ziggy pencil Cooper pulled from the pencil jar on Roberta’s desk is a pale, limp thing. Upon closer examination, I realize what it is.

A used condom.

“Um,” I say. “Ew.”

“It’s pretty fresh,” Cooper says. “I’d say Roberta had a hot date last night.”

With his free hand, he picks up an envelope from the pack of Ziggy stationery sitting on Roberta’s desk, then drops the condom into it.

“What are you doing?” I ask in alarm. “Isn’t that tampering with evidence?”

“Evidence of what?” Cooper folds the envelope over a couple of times, and sticks it in the pocket of his coat. “The police already determined there hasn’t been a crime committed.”

“Well, so what are you saving it for?”

Cooper shrugs and tosses away the pencil. “One thing I learned in this line of work: You just never know.”

He looks around Roberta’s room and shakes his head. “It does seem weird. Who has sex, then goes elevator surfing? I could maybe see it if it were the other way around—you know, all the adrenaline, or whatever, from risking your life, making you randy. But before? Unless it’s some kinky sex thing.”

I widen my eyes. “You mean like the guy likes to have sex with a girl, then pushes her off the top of the elevator?”

“Something like that.” Cooper looks uncomfortable. He doesn’t like talking about kinky sex practices with me, and changes the subject. “What about the other girl? The first one. You said you checked, and she hadn’t signed anyone in the night she died?”

“No,” I say. “But I checked just before you got here, and Roberta didn’t sign in anyone last night, either.” Then I think of something. “If… if there’d been something like that in Elizabeth’s room—a condom or something, I mean—the cops would have found it, right?”

“Not if they weren’t looking for it. And if they were really convinced her death was accidental, like this last one, they wouldn’t have even looked.”

I chew my lower lip. “Nobody’s moved into Elizabeth’s space. Her roommate has the place to herself now. We could go take a look at it.”

Cooper looks dubious.

“I will admit it’s weird about this kid dying the way she did, Heather,” he says. “Especially in light of the condom and the key thing. But what you’re implying—”

“You implied it first,” I remind him. “Besides, we can look, can’t we? Who’s it going to hurt?”

“Even if we did, it’s been a week since she died,” he points out. “I doubt we’re going to find anything.”

“We won’t know unless we try,” I say, starting for the door. “Come on.”

Cooper just looks at me.

“Why is proving that these girls didn’t cause their own deaths so important to you?” he demands.

I blink at him. “What?”

“You heard me. Why are you so determined to prove these girls’ deaths weren’t accidental?”

I can’t tell him, of course. Because I don’t want to sound like what Sarah would be bound to brand me if she knew—a psychopath. Which is how I know I would sound, if I told him what I feel… which is that I owe it to the building—to Fischer Hall itself—to figure out what’s really going on in it. Because Fischer Hall has—like Cooper—saved my life, in a way.

Well, okay, all they’ve saved me from is waitressing for the rest of my life at a Senor Swanky’s.

But isn’t that enough? I know it doesn’t make any sense—that Sarah would accuse me of transferring my affection for my parents or my ex onto a pile of bricks built in 1850—but I really do feel that I have a responsibility to prove what’s happening isn’t Fischer Hall’s fault—the staff, for not noticing these girls were on a downward spiral, or whatever—or the girls, who seem too sensible to do something so stupid—or even the building itself, for not being homey enough, or whatever. The school newspaper had already run one “in-depth” report on the dangers of elevator surfing. Who knows what it was going to print tomorrow?

See. I said it’s stupid.

Still, it’s how I feel.

But I can’t explain it to Cooper. I know there’s no point in my even trying.

“Because girls don’t elevator surf” is all I can come up with.

At first I think he’s going to walk out, the way Detective Canavan did, without another word, furious at me for wasting his time.

But instead all he does is sigh and say, “Fine. I guess we’ve got another room to check.”

Elizabeth Kellogg’s roommate opens the door to 1412 at my first knock. She’s wearing a big white T-shirt and black leggings and she’s holding a portable phone in one hand and a burning cigarette in the other.

I plaster a smile on my face and go, “Hi, I’m Heather. This is—”

“Hi,” the roommate interrupts me to say, her eyes growing wide as she notices Cooper for the first time.

Well, and why not? She’s a healthy red-blooded American girl, after all. And Cooper does bear more than a slight re semblance to one of America’s most popular male heartthrobs.

“Cooper Cartwright,” Cooper says, flashing the roommate a grin that, if I hadn’t known better, I’d have sworn he’d practiced in the mirror and reserved only for extreme cases like this one.

Except Cooper is not a practicing-smiles-in-the-mirror type of guy.

“Marnie Villa Delgado,” the roommate says. Marnie’s a big girl like me, only larger in the chest than in the tush, with a lot of very dark, very curly long hair. I can tell she’s sizing me up, the way some women will, wondering if I’m “with” Cooper, or if he’s fair game.

“We were wondering, Marnie, if we could have a word or two with you about your former roommate, Elizabeth,” Cooper says, revealing so many teeth with his grin, he nearly blinds me.

But not Marnie, since, apparently deciding Cooper and I are not an item (how could she tell? Really? How come other girls—like Marnie and Rachel and Sarah—know how to do this, but I don’t?), she says, into the phone, “I gotta go,” and hangs up.

Then, her gaze fastened hypnotically on Cooper, she says, “Come on in.”

I slip past her, Cooper following me. Marnie, I see at once, has done a pretty fast job of redecorating after Elizabeth’s death. The twin beds have been shoved together to form one king-sized bed, covered by a giant tiger-striped bedspread. The two chests of drawers have been stacked one on top of the other so Marnie now has eight drawers all to herself, instead of four, and Elizabeth’s desk is currently being employed as an entertainment unit, with a TV, DVD player, and CD player all within arm’s reach of the bed.

“I already talked to the police about her.” Marnie flicks ashes onto the tiger-striped throw rug beneath her bare feet and turns her attention momentarily from Cooper to me. “Beth, I mean. Hey. Wait a minute. Don’t I know you? Aren’t you an actress or something?”