BOUND IN THE dark, Jacob Dunning thought about all the things he would give for a shower.

All his possessions? Done. One of his toes? In a heartbeat. One of his fingers? Hmmm, he thought. Did he really need his left pinkie?

Unidentified mudlike filth stuck to his cheek, his hair. Wearing only his NYU T-shirt and boxers, the handsome brown-haired college freshman lay on a soiled concrete floor in a very tight space.

An angry industrial hum raged in the vague distance. He was blindfolded, and his hands were cuffed to a pipe behind him. A gag around his mouth was knotted tight against the hollow indentation at the base of his skull.

The indentation was called the foramen magnum, he knew. It was where your spinal cord passed into your skull. Jacob had learned about it in anatomy class a month or so ago. NYU was step one in his lifelong dream to become a doctor. His father had an 1862 edition of Gray’s Anatomy in his study, and ever since he was a little kid, Jacob had loved going through it. Kneeling in his father’s great padded office chair with his chin in his hands, he’d spend hours poring over the elegant, fascinating sketches, the topography of the human body shaded and named like distant lands, like treasure maps.

Jacob sobbed at the safe, happy memory. A drop of lukewarm water landed on the back of his neck and dripped down his spine. The itch of it was unbearable. He would get sores soon if he wasn’t able to stand. Bedsores, staph infection, disease.

The last thing he remembered was leaving Conrad’s, an Alphabet City bar that didn’t care about fake IDs. After a monstrously long chem lab, he’d been trying to chat up Heli, a stunning Finnish girl from his class. But after his fifth mojito, his tongue was losing speed. He’d called it a night when he noticed she was talking more to the male model of a bartender than to him.

His memory seemed to stop at the point when he stepped outside. How he got from there to here he couldn’t recall.

For the billionth time, he tried to come up with a scenario in which everything turned out all right. His favorite was that it was a fraternity thing. A bunch of jocks had mistaken him for some other freshman, and this was a really messed-up hazing incident.

He started weeping. Where were his clothes? Why would somebody take his jeans, his socks and shoes? The scenarios in his head were too black to allow light to enter. He couldn’t fool himself. He was in the deepest shit of his young life.

He banged his head on the pipe he was chained to as he heard a sound. It was the distant boom of a door. He felt his heart boom with it. His breath didn’t seem to know if it wanted to come in or go out.

He was pretty much convulsing when he made out a jangle interspersed with the steady approach of footsteps. He suddenly thought of the handyman at his parents’ building, the merry jingle of keys that bounced off his thigh. Skinny Mr. Durkin, who always had a tool in his hand. Hope gave him courage. It was a friend, he decided. Somebody who would save him.

“Hppp!” Jacob screamed from behind the gag.

The footsteps stopped. A lock clacked open, and cool air passed over the skin of his face. The gag was pulled off.

“Thank you! Oh, thank you! I don’t know what happened. I-”

Jacob’s breath blasted out of him as he was hit in the stomach with something tremendously hard. It was a steel-toed boot, and it seemed to knock his stomach clear through his spine.

Oh, God, Jacob thought, his head scraping the stone floor as he dry-heaved in filth. Dear God, please help me.

JACOB WAS UNCUFFED and pulled roughly for twenty or so steps and slammed into a hard-backed seat. Light spiked his eyes as his blindfold was sliced away, and his hands were cuffed again behind his back.

He was in a child’s school desk in a vast, windowless space. In front of him was an old-fashioned wooden rolling blackboard with nothing written on it. Behind him was a cold presence that lifted the hairs from his neck.

Jacob sobbed silently as a lighter hissed. The faintly spicy scent of tobacco smoke filled the air.

“Good morning, Master Dunning,” said a voice behind him.

It was a man’s voice. The man sounded perfectly sane, highly educated, in fact. He reminded him of a popular English teacher he’d had at Horace Mann, Mr. Manducci.

Hey, wait. Maybe it was Mr. Manducci. He always did seem a little too, er, friendly with some of the male students. Could this be a kidnapping or something? Jacob’s CEO father was extremely wealthy.

Jacob could actually feel the relief emit from his pores. He decided he’d take a kidnapping at this point. Ransom, being released. He was down with that. Please be a kidnapping, he found himself thinking.

“My family has money, sir,” Jacob said, carefully trying to keep the terror out of his voice and failing.

“Yes, they do,” the man said pleasantly. He could have been the DJ for a classical music station. “That’s precisely the problem. They have too much money and too little sense. They own a Mercedes McLaren, a Bentley-oh, and a Prius. How green of them. You can thank their hypocrisy for bringing you here. Unfortunately for you, your father seems to have forgotten his Exodus twenty, verse five: ‘For I, the Lord your God, am a jealous God, visiting the iniquity of the fathers upon the sons.’”

Jacob twitched violently in the hard chair as a stainless-steel pistol barrel softly caressed his right cheek.

“Now I’m going to ask you some questions,” his captor said. “Your answers are very, very important. You’ve heard of pass-fail, haven’t you?”

The pistol jabbed hard into Jacob’s face, its hammer cocking with a sharp click.

“This test you’re about to take is pass-die. Now, question one: What was your nanny’s name?”

Who? My nanny? Jacob thought. What the hell was this?

“R-R-Rosa?” Jacob said.

“That’s right. Rosa. So far, so good, Master Dunning. Now, what was her last name?”

Oh, shit, Jacob thought. Abando? Abrado? Something. He didn’t know. The sweet, silly woman that he had played hide-and-seek with. Who’d fed him after school. Rosa, pressing her warm cheek against his as she helped him blow out the candles on his birthday cake. How could he not know her last name?

“Time’s up,” the man sang.

“Abrado?” Jacob said.

“Not even close,” the man said in disgust. “Her name was Rosalita Chavarria. She was a person, you see. She actually had a first and a last name. Just like you. She was flesh and blood. Just like you. She died last year, you know. A year after your parents fired her because she was becoming forgetful, she went back to her home country. Which leads us to our third question: What was Rosa ’s home country?”

How the hell had this guy known about Rosa ’s termination? Who was this? A friend of hers? He didn’t sound Hispanic. Again, what was this?

“ Nicaragua?” Jacob tried.

“Incorrect again. She was from Honduras. A month after she returned to a one-room shack owned by her sister, she had to go for a hysterectomy. In a substandard hospital outside of Tegucigalpa, she was given a tainted transfusion of blood and contracted HIV. Honduras has the highest concentration of AIDS in the Western Hemisphere. Did you know that? Sure you did.

“Now, question four: What is the average life span in Honduras for an HIV-positive person? I’ll give you a hint. It’s a hell of a lot less than the fifteen years it is in this country.”

Jacob Dunning began to cry.

“I don’t know. How would I know? Please.”

“That won’t do, Jacob,” the man said, jamming and twisting the barrel of the gun painfully against his teeth. “Perhaps I’m not making myself clear enough. There’ll be no Ivy League A in this class. No tutors. No helpful strategies to maximize your score. You can’t cheat, and the results are ultimate. This is a test that you’ve had your whole life to study for, but I have the feeling you were slacking off. So I’d try to think a little bit harder. HIV-positive life span in Honduras! Answer now!”