“Y-yes,” said Bill, wrinkling his forehead. “Of course, the trouble with water is that one bit of it looks pretty much like the next bit. I don’t know if that had occurred to you.

“It had,” smiled Antony. “Let’s come and have a look at it.”

They walked to the edge of the copse, and lay down there in silence, looking at the pond beneath them.

“See anything?” said Antony at last.

“What?”

“The fence on the other side.”

“What about it?”

“Well, it’s rather useful, that’s all.”

“Said Sherlock Holmes enigmatically,” added Bill. “A moment later, his friend Watson had hurled him into the pond.”

Antony laughed.