“God bless us, every one,” Agnes repeated with all her extended family, and after a sip of the wine, she made an excuse to check on something in the kitchen, where she pressed hot tears into a cool, slightly damp dishtowel to prevent the telltale swelling of her eyes.

Frequently, these days, she found herself explaining aspects of life to Barty that she hadn't expected to discuss for years to come. She wondered how she could make him understand this: Life can be so sweet, so full, that sometimes happiness is nearly as intense as anguish, and the pressure of it in the heart swells close to pain.

When she was finished with the dishtowel, she returned to the dining room, and though dinner was underway, she called for another toast. Raising her glass, she said, “To Maria, who is more than my friend. My sister. I can't let you talk about what I've given you without telling your girls that you've given back more. You taught me that the world is as simple as sewing, that what seem to be the most terrible problems can be stitched up, repaired.” She raised her glass slightly higher. “First chicken to be come with first egg inside already. God bless."

“God bless,” said everyone.

Maria, after a single sip of Chardonnay, fled to the kitchen, ostensibly to check on the apricot flan that she'd brought, but in reality to press a cool and slightly damp dishtowel against her eyes.

The kids insisted on knowing what was meant by the line about the chicken, and this led to the laying of a coopful of Why-did-the chicken-cross-the-road jokes, which Edom and Jacob had memorized in childhood as an act of rebellion against their humorless father.

Later, as Bonita and Francesca proudly served their mother's individually molded Christmas-tree-shaped servings of flan, which they themselves had plated, Barty leaned close to his mother and, pointing to the table in front of them, said softly but excitedly, “Look at the rainbows!"

She followed his extended finger but couldn't see what he was talking about.

“Between the candles,” he explained.

They were dining by candlelight. Vanilla-scented bougies stood on the sideboard, across the room, glimmering in glass chimneys, but Barty pointed instead to five squat red candles distributed through the centerpiece of pine sprays and white carnations.

“Between the flames, see, rainbows."

Agnes saw no arc of color from candle to candle, and she thought that he must mean for her to look at the many cut-crystal wineglasses and water glasses, in which the lambent flames were mirrored. Here and there, the prismatic effect of the crystal rended reflections of the flames into red-orange-yellow-green-blue-indigo-violet spectrums that danced along beveled edges.

As the last of the flan was served and Maria's girls took their seats once more, Barty blinked at the candles and said, “Gone now,” even though the tiny spectrums still shimmered in the cut crystal. He turned his full attention to the flan with such enthusiasm that his mother soon stopped puzzling over rainbows.

After Maria, Bonita, and Francesca had gone, when Agnes and her brothers joined forces to clear the table and wash the dishes, Barty kissed them good-night and retired to his room with The Star Beast.

Already, he was up two hours past his bedtime. In recent months, he'd exhibited the more erratic sleeping habits of older children. Some nights, he seemed to possess the circadian rhythms of owls and bats; after being sluggish all day, he suddenly became alert and energetic at dusk wanting to read long past midnight.

For guidance, Agnes couldn't rely entirely on any of the child rearing books in her library. Barty's unique gifts presented her with special parenting problems. Now, when he asked if he could stay up even later, to read about John Thomas Stuart and Lummox, John's pet from another world, she granted him permission.

At 11:45, on her way to bed, Agnes stopped at Barty's room and found him propped against pillows. The book was not particularly large as books went, but it was big in proportion to the boy; unable to hold it open with his hands alone, he rested his entire left arm across the top of the volume.

“Good story?” she asked.

He glanced up-“Fantastic!"—and returned at once to the tale.

When Agnes woke at 1:50 A.M., she was in the grip of a vague apprehension for which she couldn't identify a source.

Fractional moonlight at the window.

The great oak in the yard, sleeping in the breathless bed of the night.

The house quiet. Neither intruders nor ghosts afoot.

Uneasy nevertheless, Agnes went down the hall to her son's room and found that he had fallen asleep sitting up, while reading. She slipped The Star Beast out of the tangle of his arms, marked his place with the jacket flap, and put the book on the nightstand.

As Agnes slipped excess pillows out from behind him and eased him down into the covers, Barty half woke, muttering about how the police were going to kill poor Lummox, who hadn't meant to do all that damage, but he'd been frightened by the gunfire, and when you weighed six tons and had eight legs, you sometimes couldn't get around in tight places without knocking something over.

“It's okay,” she whispered. “Lummox will be all right."

He closed his eyes again and seemed asleep, but then as she clicked off the lamp, he murmured, “You have your halo again."

In the morning, after Agnes showered and dressed, when she went downstairs, she discovered Barty already at the kitchen table, eating a bowl of cereal while riveted to the book. Finished with breakfast, he returned to his room, reading as he went.

By lunch, he had turned the final page, and he was so full of the tale that he seemed to have no room for food. While his mother kept reminding him to eat, he regaled her with the details of John Thomas Stuart's great adventures with Lummox, as though every word that Heinlein had written were not science fiction, but truth.

Then he curled up in one of the big armchairs in the living room and began the book again. This was the first time he had ever reread a novel-and he finished it at midnight.

The following day, Wednesday, December 27, his mother drove him to the library, where he checked out two Heinlein titles recommended by the librarian: Red Planet and The Rolling Stones. Judging by his excitement, on the way home in the car, his response to previous mystery-novel series had been a pleasant courtship, whereas this was desperate, undying love.

Agnes discovered that watching her child be totally consumed by a new enthusiasm was an unparalleled delight. Through Barty, she had a tantalizing sense of what her own childhood might have been like if her father had allowed her to have one, and at times, listening to the boy exclaim about the space-faring Stone family or about the mysteries of Mars, she discovered that at least some part of a child still lived within her, untouched by either cruelty or time.

Shortly before three o'clock, Thursday afternoon, in a state of agitation, Barty raced into the kitchen, where Agnes was baking buttermilk-raisin pies. Holding Red Planet open to pages 104 and 105, he complained urgently that the library copy was defective. “There's twisty spots in the print, twisty-funny letters, so you can't just exactly read all the words. Can we buy our own copy, go out and buy one right now?"

After wiping her floury hands, Agnes took the book from him and, examining it, could find nothing wrong. She flipped back a few pages, then a few forward, but the lines of type were crisp and clear. “Show me where, honey."

The boy didn't at once answer, and when Agnes looked up from Red Planet, she saw that he was staring oddly at her. He squinted, as if puzzled, and said, “The twisty spots just jumped off the page right up on your face."

The formless apprehension with which she had awakened at 1:50, Tuesday morning, had returned to her from time to time during the past couple days. Now, here it came again, pinching her throat and tightening her chest-at last beginning to take form.

Barty turned away from her, surveyed the kitchen, and said, “Ah. The twisty is me."

Halos and rainbows loomed in her memory, ominous as they had never been before.

Agnes dropped to one knee before the boy and held him gently by the shoulders. “Let me look."

He squinted at her.

“Peepers open wide, kiddo."

He opened them.

Sapphires and emeralds, dazzling gems set in clearest white, ebony pupils at the center. Beautiful mysteries, these eyes, but no different now than they had ever been, as far as she could tell.

She might have attributed his problem to eyestrain from all the reading he'd done during the past few days. She might have put drops in his eyes, told him to leave the books alone for a while, and sent him into the backyard to play. She might have counseled herself not to be one of those alarmist mothers who detected pneumonia in every sniffle, a brain tumor behind every headache.

Instead, trying not to let Barty see the depth of her concern, she told him to get his jacket from the front closet, and she got hers, and leaving the buttermilk-raisin pies unfinished, she drove him to the doctor's office, because he was her reason to breathe, the engine of her heart, her hope and joy, her everlasting bond to her lost husband. Dr. Joshua Nunn was only forty-eight, but he had appeared grandfatherly since Agnes had first gone to him as a patient after the death of her father, more than ten years ago. His hair turned pure white before he was thirty. Every day off, he either worked assiduously on his twenty-foot sportfisher, Hippocratic Boat, which he scraped and painted and polished and repaired with his own hands, or puttered around Bright Bay in it, fishing as though the fate of his soul depended on the size of his catch; consequently, he spent so much time in the salt air and sun that his perpetually tan face was well-wizened at the corners of his eyes and as appealingly creased as that of the best of grandfathers. Joshua applied the same diligence to the preservation of a round belly and a second chin that he brought to the maintenance of his boat, and considering his wire-rimmed eyeglasses and bow tie and suspenders and the elbow patches on his jacket, he seemed to have intentionally sculpted his physical appearance to put his patients at ease, as surely as he had selected his wardrobe for the same purpose.

Always, he was good with Barty, and on this occasion, he teased more than the usual number of smiles and giggles from the boy as he tried to get him to read the Snellen chart on the wall. Then he lowered the lights in the examination room to study his eyes with an ophthalmometer and an ophthalmoscope.

From the chair in the comer, where Agnes sat, it seemed that Joshua took an inordinately long time on what was usually a quick examination. Worry so weighed on her that the physician's customary thoroughness seemed, this time, to be filled with dire meaning.

Finished, Joshua excused himself and went down the hall to his office. He was gone perhaps five minutes, and when he returned, he sent Barty off to the waiting room, where the receptionist kept a jar of lemon- and orange-flavored hard candies. “A few of them have your name on 'em, Bartholomew."

The subtle distortions in his vision, which caused lines of type to twist, didn't appear to trouble Barty much otherwise. He moved as quickly and as surely as ever, with his special grace.

Alone with Agnes, the physician said, “I want you to take Barty to a specialist in Newport Beach. Franklin Chan. He's a wonderful ophthalmologist and ophthalmological surgeon, and right now we don't have anyone like that here in town."

Her hands were locked together in her lap, gripped so tightly for so long that the muscles in her forearms ached. “What's wrong?"

“I'm not an eye specialist, Agnes."

“But you have some suspicion."

“I don't want to worry you unnecessarily if-"

“Please. Prepare me."

He nodded. “Sit up here.” He patted the examination table.

She sat on the end of the table, where Barty had sat, now at eye level with the standing physician.

Before Agnes's fingers could braid again, Joshua held out his darkly tanned, work-scarred hands. Gratefully, she held fast to him.

He said, “There's a whiteness in Barty's right pupil ... which I think indicates a growth. The distortions in his vision are still there, though somewhat different, when he closes his right eye, so that indicates a problem in the left, as well, even though I'm not able to see anything there. Dr. Chan has a full schedule tomorrow, but as a favor to me, he's going to see you before his usual office hours, first thing in the morning. You'll have to start out early."

Newport Beach was almost an hour's drive north, along the coast.

“And,” Joshua cautioned, “you better prepare for a long day. I'm pretty sure Dr. Chan will want to consult with an oncologist."

“Cancer,” she whispered, and superstitiously reproached herself for speaking the word aloud, as though thereby she'd given power to the malignancy and ensured its existence.

“We don't know that yet,” Joshua said.

But she knew. Barty, buoyant as ever, seemed not to be much worried about the problem with his vision. He appeared to expect that it would pass like any sneezing fit or cold.

All he cared about was Red Planet, and what might happen after page 103. He had carried the book with him to the doctor's office, and on the way home in the car; he repeatedly opened it, squinting at the lines of type, trying to read around or through the “twisty” spots. “Jim and Frank and Willis, they're in deep trouble."

Agnes prepared a dinner to indulge him: hot dogs with cheese, potato chips. Root beer instead of milk.

She was not going to be as forthright with Barty as she had insisted that Joshua Nunn be with her, in part because she was too shaken to risk forthrightness.

Indeed, she found it difficult to talk with her son in their usual easy way. She heard a stiffness in her voice that she knew would sooner or later be apparent to him.

She worried that her anxiety would prove contagious, that when her fear infected her boy, he would be less able to fight whatever hateful thing had taken seed in his right eye.

Robert Heinlein saved her. Over hot dogs and chips, she read to Barty from Red Planet, beginning at the top of page 104. He had previously shared enough of the story with Agnes so that she felt connected to the narrative, and soon she was sufficiently involved with the tale that she was better able to conceal her anguish.

To his room then, where they sat side by side in bed, a plate of chocolate-chip cookies between them. Through the evening, they stepped off this earth and out of all its troubles, into a world of adventure, where friendship and loyalty and courage and honor could deal with any malignancy.

After Agnes read the final words on the final page, Barty was drunk on speculation, chattering about what-might-have-happened-next to these characters that had become his friends. He talked nonstop while changing into his pajamas, while peeing, while brushing his teeth, and Agnes wondered how she would wind him down to sleep.