Miss Abercrombie, the manual therapist patted the old man on the shoulder. “You’re doing just fine, Mr. Lieberman. Show it to me when you have finished.”

The oldster in the stained convalescent suit gave her a quick, shy smile and went back to his aimless smearing in the finger paints.

Miss Abercrombie smoothed her smock down over trim hips and surveyed the other patients working at the long tables in the hospital’s arts and crafts shop. Two muscular and bored attendants in spotless whites, lounged beside the locked door and chatted idly about the Dodgers’ prospects for the pennant.

Through the barred windows of the workshop, rolling green hills were seen, their tree-studded flanks making a pleasant setting for the mental institution. The crafts building was a good mile away from the main buildings of the hospital and the hills blocked the view of the austere complex of buildings that housed the main wards.

The therapist strolled down the line of tables, pausing to give a word of advice here, and a suggestion there.

She stopped behind a frowning, intense patient, rapidly shaping blobs of clay into odd-sized strips and forms. As he finished each piece, he carefully placed it into a hollow shell hemisphere of clay.

“And what are we making today, Mr. Funston?” Miss Abercrombie asked.

The flying fingers continued to whip out the bits of shaped clay as the patient ignored the question. He hunched closer to his table as if to draw away from the woman.

“We mustn’t be antisocial, Mr. Funston,” Miss Abercrombie said lightly, but firmly. “You’ve been coming along famously and you must remember to answer when someone talks to you. Now what are you making? It looks very complicated.” She stared professionally at the maze of clay parts.

Thaddeus Funston continued to mold the clay bits and put them in place.

Without looking up from his bench he muttered a reply.

“Atom bomb.”

A puzzled look crossed the therapist’s face. “Pardon me, Mr. Funston. I thought you said an ‘atom bomb.’”

“Did,” Funston murmured.

Safely behind the patient’s back, Miss Abercrombie smiled ever so slightly. “Why that’s very good, Mr. Funston. That shows real creative thought. I’m very pleased.”

She patted him on the shoulder and moved down the line of patients.

A few minutes later, one of the attendants glanced at his watch, stood up and stretched.

“All right, fellows,” he called out, “time to go back. Put up your things.”

There was a rustle of paint boxes and papers being shuffled and chairs being moved back. A tall, blond patient with a flowing mustache, put one more dab of paint on his canvas and stood back to survey the meaningless smears. He sighed happily and laid down his palette.

At the clay table, Funston feverishly fabricated the last odd-shaped bit of clay and slapped it into place. With a furtive glance around him, he clapped the other half of the clay sphere over the filled hemisphere and then stood up. The patients lined up at the door, waiting for the walk back across the green hills to the main hospital. The attendants made a quick count and then unlocked the door. The group shuffled out into the warm, afternoon sunlight and the door closed behind them.

Miss Abercrombie gazed around the cluttered room and picked up her chart book of patient progress. Moving slowly down the line of benches, she made short, precise notes on the day’s work accomplished by each patient.

At the clay table, she carefully lifted the top half of the clay ball and stared thoughtfully at the jumbled maze of clay strips laced through the lower hemisphere. She placed the lid back in place and jotted lengthily in her chart book.

When she had completed her rounds, she slipped out of the smock, tucked the chart book under her arm and left the crafts building for the day.

The late afternoon sun felt warm and comfortable as she walked the mile to the main administration building where her car was parked.

As she drove out of the hospital grounds, Thaddeus Funston stood at the barred window of his locked ward and stared vacantly over the hills towards the craft shop. He stood there unmoving until a ward attendant came and took his arm an hour later to lead him off to the patients’ mess hall.

The sun set, darkness fell over the stilled hospital grounds and the ward lights winked out at nine o’clock, leaving just a single light burning in each ward office. A quiet wind sighed over the still-warm hills.

At 3:01 a.m., Thaddeus Funston stirred in his sleep and awakened. He sat up in bed and looked around the dark ward. The quiet breathing and occasional snores of thirty other sleeping patients filled the room. Funston turned to the window and stared out across the black hills that sheltered the deserted crafts building.

He gave a quick cry, shut his eyes and clapped his hands over his face.

The brilliance of a hundred suns glared in the night and threw stark shadows on the walls of the suddenly-illuminated ward.

An instant later, the shattering roar and blast of the explosion struck the hospital buildings in a wave of force and the bursting crash of a thousand windows was lost in the fury of the explosion and the wild screams of the frightened and demented patients.

It was over in an instant, and a stunned moment later, recessed ceiling lights began flashing on throughout the big institution.

Beyond the again-silent hills, a great pillar of smoke, topped by a small mushroom-shaped cloud, rose above the gaping hole that had been the arts and crafts building.

Thaddeus Funston took his hands from his face and lay back in his bed with a small, secret smile on his lips. Attendants and nurses scurried through the hospital, seeing how many had been injured in the explosion.

None had. The hills had absorbed most of the shock and apart from a welter of broken glass, the damage had been surprisingly slight.

The roar and flash of the explosion had lighted and rocked the surrounding countryside. Soon firemen and civil defense disaster units from a half-dozen neighboring communities had gathered at the still-smoking hole that marked the site of the vanished crafts building.

Within fifteen minutes, the disaster-trained crews had detected heavy radiation emanating from the crater and there was a scurry of men and equipment back to a safe distance, a few hundred yards away.

At 5:30 a.m., a plane landed at a nearby airfield and a platoon of Atomic Energy Commission experts, military intelligence men, four FBI agents and an Army full colonel disembarked.

At 5:45 a.m. a cordon was thrown around both the hospital and the blast crater.

In Ward 4-C, Thaddeus Funston slept peacefully and happily.

“It’s impossible and unbelievable,” Colonel Thomas Thurgood said for the fifteenth time, later that morning, as he looked around the group of experts gathered in the tent erected on the hill overlooking the crater. “How can an atom bomb go off in a nut house?”

“It apparently was a very small bomb, colonel,” one of the haggard AEC men offered timidly. “Not over three kilotons.”

“I don’t care if it was the size of a peanut,” Thurgood screamed. “How did it get here?”

A military intelligence agent spoke up. “If we knew, sir, we wouldn’t be standing around here. We don’t know, but the fact remains that it WAS an atomic explosion.”

Thurgood turned wearily to the small, white-haired man at his side.

“Let’s go over it once more, Dr. Crane. Are you sure you knew everything that was in that building?” Thurgood swept his hand in the general direction of the blast crater.

“Colonel, I’ve told you a dozen times,” the hospital administrator said with exasperation, “this was our manual therapy room. We gave our patients art work. It was a means of getting out of their systems, through the use of their hands, some of the frustrations and problems that led them to this hospital. They worked with oil and water paints and clay. If you can make an atomic bomb from vermillion pigments, then Madame Curie was a misguided scrubwoman.”

“All I know is that you say this was a crafts building. O.K. So it was,” Thurgood sighed. “I also know that an atomic explosion at 3:02 this morning blew it to hell and gone.