"But I haven't," Prale declared.

"Retribution comes when we least expect it, Mr. Prale."

"Yes. I believe that you wrote that in one of your notes."

He had said it! And Jim Farland had told him not to let her suspect that they knew. Well, he couldn't help it now.

Kate Gilbert gasped and sat back from him.

"In my note?" she said.

"The notes interested me greatly, Miss Gilbert. I have saved them. But why should you send them to me?"

"You can ask me that!" she exclaimed. "So you know that I wrote them, do you? In that case, Mr. Prale, you know why I spoke of retribution, you probably know my identity and intentions, and you know why you have enemies!"

"But I do not!" he protested.

"Please do not attempt to tell a falsehood, Mr. Prale. You know I wrote the notes, do you? Then you know everything else. So you are going to fight."