When he was fifty-five and his eldest daughter turned thirty (she was married, with a daughter of her own), the laboratory made a mistake and released the information Anthony needed among a batch of old data that the lab felt was harmless. It wasn't Anthony who discovered the information, however, but instead a colleague two thousand miles away who had other reasons to look through the old data and recognized the significance of the type of rays that Anthony's father had been exposed to. Helped by his colleague's calculations,.Anthony devised a treatment, tested it on computer models, subjected rats to the same type of rays, found that they developed the same rapid symptoms as his father had, gave the animals the treatment, and felt his pulse quicken when the symptoms disappeared as rapidly as they had come on.

With his wife next to him, Anthony stood outside his father's cryo-chamber as arrangements were made to thaw him. He feared that the technicians would make an error during the procedure (the word echoed from his youth), that his father wouldn't wake up.

His muscles tightened as something hissed and the door swung open. The hatch slid out.

Anthony's father looked the same as when he'd last seen him: naked, gaunt, and gray, suspended over a force field.

"You thawed him that quickly?" Anthony asked.

"It doesn't work if it isn't instantaneous."

His father's chest moved up and down.

"My G.o.d, he's alive," Anthony said. "He's actually..."

But there wasn't time to marvel. The disease would be active again, racing to complete its destruction.

Anthony hurriedly injected his father with the treatment. "We have to get him to a hospital."

He stayed in his father's room, constantly monitoring his father's condition, injecting new doses of the treatment precisely on schedule. To his amazement, his father improved almost at once. The healthier color of his skin made obvious what the blood tests confirmed-the disease was retreating.

Not that his father knew. One effect of being thawed was that the patient took several days to wake up. Anthony watched for a twitch of a finger, a flicker of an eyelid, to indicate that his father was regaining consciousness. After three days, he became worried enough to order another brain scan, but as his father was being put in the machine, a murmur made everyone stop.

"... Where am I?" Anthony's father asked.

"In a hospital. You're going to be fine."

His father strained to focus on him. "... Who?..."

"Your son."

"No.... My son's... a child." Looking frightened, Anthony's father lost consciousness.

The reaction wasn't unexpected. But Anthony had his own quite different reaction to deal with. While his father hadn't seen him age and hence didn't know who Anthony was, Anthony's father hadn't aged and hence looked exactly as Anthony remembered. The only problem was that Anthony's memory came from when he was nine, and now at the age of fifty-five, he looked at his thirty-two-year-old father, who wasn't much older than Anthony's son.

"Marian's dead?"

Anthony reluctantly nodded. "Yes. A car accident."

"When?"

Anthony had trouble saying it. "Twenty-two years ago."

"No."

"I'm afraid it's true."

"I've been frozen forty-six years'? No one told me what was going to happen."

"We couldn't. You were unconscious. Near death."

His father wept. "Sweet Jesus."

"Our house?"

"Was sold a long time ago."

"My friends?"

Anthony looked away.

With a shudder, his father pressed his hands to his face. "It's worse than being dead."

"No," Anthony said. "You heard the psychiatrist. Depression's a normal part of coming back. You're going to have to learn to live again."

"Just like learning to walk again," his father said bitterly.

"Your muscles never had a chance to atrophy. As far as your body's concerned, no time pa.s.sed since you were frozen."

"But as far as my mind goes? Learn to live again? That's something n.o.body should have to do."

"Are you saying that Mom and I should have let you die? Our lives would have gone on just the same. Mom would have been killed whether you were frozen or you died. Nothing would have changed, ex cept that you wouldn't be here now."

"With your mother gone..."

Anthony waited.

"With my son gone..."

"I'm your son."

"My son had his ninth birthday two weeks ago. I gave him a new computer game that I looked forward to playing with him. I'll never get to see him grow up."

"To see me grow up. But I'm here now. We can make up for lost time."

"Lost time." The words seemed like dust in his father's mouth.

"Dad"-it was the last time Anthony used that term-"this is your grandson, Paul. These are your granddaughters Sally and Jane. And this is Jane's son, Peter. Your great-grandson."

Seeing his father's reaction to being introduced to grandchildren who were almost as old as he was, Anthony felt heartsick.

"Forty-six years? But everything changed in a second," his father said. "It makes my head spin so much..."

"I'll teach you," Anthony said. "I'll start with basics and explain what happened since you were frozen. I'll move you forward. Look, here are virtual videos of-"

"What are virtual videos?"

"Of news shows from back then. We'll watch them in sequence. We'll talk about them. Eventually, we'll get you up to the present."