chemical suits, coming to identify their bodies.
“One of you must know the answer. An atom that loses one or more electrons becomes?”
The only sound was the ticking of the wall-mounted clock. No wonder America’s world dominance was on the decline, Koller mused. For years, in between contracts, he had protected his identity as a killer by creating new identities as a substitute teacher. He enjoyed the deception and the teenage girls, but until recently he also enjoyed making complex concepts clear. He had well-supported teaching credentials in California and Florida, where he also had residences. At last, a tiny hand, third desk from the back, tentatively came up. The killer’s eyes flashed with delight. All heads turned toward the back to see who it was.
“Ah! Ms. Rebecca Woodorf.”
The girl looked puzzled at his remembering her name. After all, what substitute teacher, without the aid of a seating chart, who had heard their names only once during attendance, could pull off such a feat?
“Please stand up, Rebecca. Stand up. It appears you are our only salvation. Now, prove to me and to your fellow classmates that America’s tenth graders can stay with the Russians, Chinese, and Japanese when it comes to inorganic chemistry.”
Koller rubbed his hands in anticipation. It was a game he enjoyed playing during the sometimes interminable periods between contracts-to win over the class so that he was all they would be talking about after school. He actually had never finished college, dropping out after he was recruited by a psychology professor to meet with the people who would eventually teach him how to kill for money. They were the ones who would supply him with unassailable teaching credentials. He was a quick study in every area. And while there was much to learn, he had a head start, because when it came to manipulating others and controlling their behavior, he already had a Ph.D. with high honors.
Rebecca rose. Her black sweater was tight against her slender frame, accentuating her burgeoning womanhood in a most appealing way. Koller noticed, too, that her lips were tight across her teeth. She was shy, though not too shy to show pride in her body. Interesting.
“Mr. Greene?” Rebecca said in a small voice.
“Yes. Go ahead. Give it to us.”
“May I go to the bathroom?”
The classroom exploded in laugher. Rebecca glanced about, mortified. Koller kept his expression stern and his arms folded tightly across his chest. The laughter subsided.
“Only if you can tell me what an atom that loses one or more electrons becomes,” Koller said, matter-of- factly.
There was an audible gasp and Rebecca’s lips tensed even more. The students stared from their classmate to their substitute teacher and back, trying to get a read on each of them. Behind his deep brown contacts, Koller gave them nothing to fix on. In the next teaching gig, the lenses would be green or navy, covering his true eye color, a startlingly pale blue. His store-bought mustache would be on or off depending on his mood. Koller took pride in disguising not only his thoughts, intentions, and facial features, but his physique as well, which for this job, thanks to skillfully applied padding and latex, looked doughy and poorly maintained-anything but capable of snapping a human neck with the quick grip and twist of one hand.
“Are you serious?” Rebecca managed.
“The bathroom key in exchange for an atom that loses one or more electrons.”
Koller paused just the right amount of time before breaking.
“Nah,” he said with a broadening grin and a dismissive wave of his hand. “I’m just messin’ with you. Of course you can go.”
That did it. The students applauded and howled even louder this time, and Rebecca, who moments before had looked as if she were going to be sick, laughed along with them. Clearly still uncertain and off balance, she walked warily to the front of the class, past the substitute they knew as Mr. Robert Greene. Cautiously, she took the key attached to a model of a chlorine atom off his desk, and moved to the door. Once there, she paused before exiting the room, and turned back.
“Mr. Greene?”
“Yes, Rebecca?”
“A cation,” she said simply.
Koller, though not the least surprised, gave her a playful bow and applauded, encouraging her classmates to do the same. She beamed then turned to go, the backs of her thighs taunting Koller as she closed the door behind her.
Playing head games with fifteen-year-olds. Ogling a child’s ass. This day was becoming truly torturous.
In the past, teaching high school chemistry had been reasonably diverting, in addition to providing him with an effective cover. It was not a good idea to be a single man, leading a secret life, without having some sort of socially acceptable profession. In addition, he had never done that well with too much downtime between contracts. But now, the queens of vapidity, YouTube, the Internet, and television, had taken their toll, and in most of the so-called students there was little mind remaining to mess with.
This was the end of the teaching, he vowed. From now on, when he needed a diversion, he would just drive out to the woods and kill something. It had been two weeks since the last contract. How long would he be made to wait?
He recalled with fondness the nurse from Charlotte, whom he had studied and then manipulated to ingest a lethal overdose of sleeping pills, complete with a handwritten suicide note.
You call, Franz Koller delivers. The CSI goofs would have given up searching for clues in the nurse’s death before the first commercial. Koller heard the growing restlessness behind him and knew he was ignoring the class. Screw them. They were lucky he didn’t go out to the local poison gas store for some sarin.
Sleepers and a suicide note. The woman was a magnificent non-kill-more intense than screwing a hundred Rebecca Woodorfs would have been. Belle Coates, first in her class at nursing school, fluent in three languages, was so exquisitely sexy, lying there naked, helpless, and utterly outmaneuvered, slipping away in the lukewarm water of her bathtub. Just watching her breathing slow and her head slip beneath the surface had given him a fearsome erection. He never even had to touch her. Sex was all about control, and how much more control could there be than-
The classroom door opened and closed.
Rebecca Woodorf returned from the bathroom, less shy and more confident.
“You have some TP stuck on your shoe,” Koller said casually as she passed.
The girl reddened, quickly glanced behind to see, then stared in confusion at her teacher.
“Just kidding,” Koller said. “Gotcha.”
This time, the laughter from her classmates was directed at her. Koller did nothing to stifle it. The girl’s shoulders sank under the humiliation as she scuffled back to her desk.
He sent a portly boy named Sommers to pass out a quiz left for them by their teacher. They were all quiet now, busily scribbling in their booklets, answering questions a sixth-grader should have known.
Ten minutes more… ten min-
His cell phone began ringing. The tone was AC/DC’s famous guitar riff from “Back in Black.” The students recognized the song immediately and looked up at Koller with surprise and reverence. Mr. Robert Greene was hip- the coolest chemistry teacher around.
Their delight did not come close to Koller’s.
“Who is it, Greene?” one of the class toughs called out. “One of your biker babes?”
“I wouldn’t be caught dead on a motorcycle, Harcourt,” Koller said, flashing back to the contract on a surgeon from Chicago who rode his gleaming Harley into oblivion.
The bolts supporting the front and rear calipers, carefully modified by the master of the non-kill, disconnected simultaneously at the top of a long 10 percent grade on the interstate. Under the best of circumstances, investigators would probably never have spotted the modification. In the case of Lewis Leonard, M.D., a tractor- trailer saw to it that there was no modification left to detect.
“So what’s the call all about?” Harcourt asked far too loudly.
