“In her hair,” Tillie guessed again.

“I know!” Peggy jumped up and down. “In her candle!”

“Good! That’s right! How did you guess?” Alice’s face shone.

“She—” Peggy did not finish. At that instant old Flash leapt from his corner, dashed up to the window which was above his head, and barked angrily.

At the same instant Tillie cried: “We do have a spy on our farm! I saw his face in the window! Saw him plain as day!”

They all rushed to the kitchen where the others were talking. A few excited words and the boys, with Flash at their heels, were out searching in the night.

But for one thing they might have succeeded in making a capture. The moment they stepped outside, the sky was lit by a sudden flash. Then came the roar of an explosion.

“They’re at it again,” Young Lord murmured.

“Here Flash!” Brand called. “Go find him!” But Flash only whined at his feet. The roar of that distant explosion had paralyzed him. And so, in the end they returned empty handed.

“Aunt Alice,” Peggy whispered as she was being tucked in bed, “will you tell us more about those lady spies?”