His twins—Evan and Ella, both nine—were home sick again. Pale faces. Low energy. Coughs that seemed to linger longer than they should. The doctor had assured him it was nothing serious, just exhaustion and stress, but Daniel knew the truth ran deeper.

Since their mother died two years earlier, the children had slowly withdrawn into themselves.

And Daniel, a self-made millionaire who could solve billion-dollar problems before lunch, had failed to notice how lonely his own house had become.

“I’ll be back early,” he promised, kneeling in front of them.

They nodded politely.

Too politely.

As usual, he handed responsibility over to the housekeeper, Grace Miller—a quiet woman in her mid-twenties who had worked for him for nearly a year. She cleaned well, spoke little, and never caused trouble.

Or so he thought.

The meeting Daniel rushed to ended sooner than expected. On impulse, he drove straight home.

The mansion was unusually lively when he stepped inside.

Not loud—but alive.

He heard voices. Excited voices.

Curious, Daniel followed the sound toward the dining room.

And then he stopped cold.

The long mahogany table—usually spotless—was covered with notebooks, colored markers, measuring cups, and glass jars. Evan and Ella sat across from each other, wide-eyed, leaning forward in their chairs.

Between them stood Grace.

But she wasn’t cleaning.

She was teaching.

“Okay,” Grace said gently, “what do you think will happen if we mix these two?”

Evan raised his hand eagerly. “It’ll change color!”

Ella shook her head. “No, it’ll bubble!”

Grace smiled. “Let’s test our hypothesis.”

She carefully poured clear liquid from one jar into another. The mixture fizzed lightly, releasing harmless foam that rose and spilled over the sides.

The twins gasped.

Then laughed.

Daniel stared.

His sick children—who hadn’t smiled in days—were laughing.

Grace clapped softly. “That’s called a chemical reaction. Science isn’t magic. It’s curiosity.”

Daniel felt something tighten in his throat.

Grace finally noticed him.

Her face drained of color.

“Oh—Mr. Whitmore,” she said quickly. “I can explain. I wasn’t doing anything dangerous. Just a simple experiment with baking soda and—”

Daniel raised his hand.

“Why?” he asked.

Grace hesitated. “Why… what, sir?”

“Why are you doing this?”

The children looked between them, suddenly nervous.