My 6-year-old son emptied his piggy bank to help our elderly neighbor when her house went dark — but the next morning, our yard was covered with piggy banks, patrol cars blocked the street, and one officer handed me a red piggy bank with a war:ning: “Break this open.”

Oliver nodded, still holding onto me.

“I’m Officer Hayes,” he said gently. “Nobody is in trouble.”

“Then why are the police cars here?” Oliver asked.

Officer Hayes glanced toward Mrs. Adele’s small yellow house across the street.

“Because yesterday,” he said, “you saw something a lot of adults failed to notice.”

Then he held the red piggy bank toward me.

“Ma’am, I need you to break this open.”

I stared at him.

“Why?”

His face became careful.

“Because what’s inside is worth more than money.”

It had started a few days earlier, when I saw Mrs. Adele standing near her mailbox, gripping an envelope a little too tightly.

Oliver waved from beside me.

“Hi, Mrs. Adele!”

She smiled, but the smile arrived late.

“Hello, my favorite dinosaur expert.”