The Square Root of Murder (Professor Sophie Knowles)

maybe five minutes total from the call to liftoff.
    I thought of Bruce. This was a regular part of his job, if not every day, then at least a few times a week. It’s what he was here for. I hoped I’d be able to see him in action some time. As the helicopter became smaller and smaller in the air, I hoped most that wherever the MAstar crew was off to, they arrived in time to help.
    I felt like saluting.
    I turned to Rachel. “Well, that was exciting,” I said.
    And we both laughed.
     
     
    With everyone gone on their mission, Rachel and I moved to the trailer living room, which sported dark brown leather-like chairs and a sofa, a combination television set and DVD player, and a wood-like coffee table. Magazines and DVDs were stacked neatly in a rack. No sign of a used glass or plate; no socks or towels flung around. The only stray item was a single remote control that was lined up with the edge of the coffee table. I wondered if the room was always this neat or if someone had picked up for our benefit this morning.
    Knowing Bruce and the spit-polish code of order that seemed to prevail for military types, I guessed that even though the MAstar trailer was a sort of male bastion, these were males who’d had a heavy dose of neatness training.
    We had a lot more space in this room, plus the dubious benefit of a barely working air conditioner. Rachel sniffed and cleared her throat. Her upright posture and firm expression indicated that she’d gotten over her crying jag and was ready to talk. Maybe the urgency of the flight mission had gotten to her and put things in perspective. She might be in trouble, but she was not sprawled on a highway or trapped in her car.
    I sat waiting, a welcoming expression on my face.
    “I lied, Dr. Knowles.”
    No, no, no. A chill overtook my body, and it didn’t come from the low-end A/C unit. Had I been that far off about my assistant? A woman I thought of as a friend? In an uncontrollable reflex, my eyes shot to the exit sign over the door. If not my rational self, some part of me seemed to think I was closeted in a trailer with a murderer.
    Rachel didn’t look like a killer, sitting there with her arms wrapped around herself, her straggly hair and faded jean shorts, frayed at the bottom, giving her a waif-like look. When she held a wad of tissues to her face and blew her nose loudly, it was almost comforting. Killers don’t do that, I told myself uselessly.
    I stared at a point over Rachel’s shoulder where there was a map of the MAstar bases, eleven of them in all, spread across the state. I wondered if they were all on missions now and if any of their empty trailers were serving as confessionals. As for speaking, the best I could do was mimic a radio talk show host.
    “I’m listening,” I said.
    “You’re going to hate me.”
    “I won’t hate you, Rachel.” Unless . . . I bit my tongue.
    “At the party, okay?”
    I nodded. “Okay.”
    “I picked up a piece of the cake from the table and grabbed a can of soda to take to Dr. Appleton, okay?”
    “Okay.”
    “And I went upstairs, okay?” She paused to take care of her nose again. “When I said I knocked on Dr. Appleton’s door and he didn’t answer? That was the lie.”
    “Okay.” I was getting into Rachel’s rhythm. “So Dr. Appleton did answer the door?”
    “No.”
    “You didn’t knock?”
    She shook her head. “No.”
    Bad question when the answer is ambiguous. I could see that I’d need to go into puzzle-solving mode to move this along. “The door was open.”
    “Yes.”
    Finally, getting somewhere. Possibly.
    “You went in,” I guessed.
    Rachel nodded slowly and sucked in her breath; her eyes went wide. “You could see his legs, on the floor behind his desk. I put the food on the chair near his computer table and I tiptoed over to look in case I could help him get up or something, but I was scared because I knew he’d yell at me if he was busy down there.”
    “Busy on the floor?”
    “Like, looking for something he dropped? Or going through the bottom drawer?”
    I hadn’t thought of those possibilities. “But he wasn’t busy.”
    “No.”
    “What did you see, Rachel?”
    She took a breath. “His shirt was torn open and you could see his undershirt. And his face was all red and his eyes”—Rachel closed her eyes as if her professor’s body was in front of her at this moment in immodest attire, a lascivious look on his face—“I couldn’t look. I didn’t touch him, but I knew