Bill, had to be content with that, but he was too much excited to wonder what Antony meant.
“Righto,” he said. “Go on.”
“Well, we’ll just make sure we can get back again, first. It really wouldn’t be fair on the Inspector if we got stuck down here for the rest of our lives. He’s got enough to do trying to find Mark, but if he has to find you and me as well—”
“We can always get out at the other end.”
“Well, we’re not certain yet. I think I’d better just go down and back. I promise faithfully not to explore.”
“Right you are.”
Antony sat down on the ledge of bricks, swung his feet over, and sat there for a moment, his legs dangling. He flashed his torch into the darkness again, so as to make sure where the steps began; then returned it to his pocket, seized the staple in front of him and swung himself down. His feet touched the steps beneath him, and he let go.
“Is it all right?” said Bill anxiously.
“All right. I’ll just go down to the bottom of the steps and back. Stay there.”
The light shone down by his feet. His head began to disappear. For a little while Bill, craning down the opening, could still see faint splashes of light, and could hear slow uncertain footsteps; for a little longer he could fancy that he saw and heard them; then he was alone....