There was a start on the old man's part, and he would have leaped from the chair, if Old Broadbrim had not held him down.

"I knew it. You're the man!" he cried.

"There was no tenth step, Danny."

"You found that out, did you?"

"There are loose stones in the wall of the round dungeon."

"I found that out when I looked with the light."

"And didn't find the victim there, eh?"

"That's it. You were gone."

"Now, Danny, tell me why you serve Merle."

"I am under his thumb."