“By Jove! You mean that as soon as the pond has been dragged, Cayley will hide something there?”

“Yes, I’m afraid so.”

“But why afraid?”

“Because I think that it must be something very important, something which couldn’t easily be hidden anywhere else.”

“What?” asked Bill eagerly.

Antony shook his head.

“No, I’m not going to talk about it yet. We can wait and see what the Inspector finds. He may find something⁠—I don’t know what⁠—something that Cayley has put there for him to find. But if he doesn’t, then it will be because Cayley is going to hide something there tonight.”

“What?” asked Bill again.