“Find out what?” I inquired, regarding him steadily with narrowed eyes.

He raised his face and grinned.

“Have you got a lot of grit, Jerry?”

“That all depends,” I returned, on my guard. “What are you planning to do?” was my cautious inquiry. “Hold up a bank?”

“To-night,” he said, “you and I are going to visit the old mill.”

“That’s what you say.”

“We’ve got to do it,” he waggled.

“It’s a nice, easy way to commit suicide.”

“ ‘Ten and ten,’ ” he mused. “What does it mean? What is the spy doing? Has he found the hidden fortune yet?… I wish it was dark.”

“Too risky for me,” I told him.