"All the same," he said, "you wanted to find the passage, and now you've found it. Aren't you going into it at all?"
Antony took his arm.
"Let's go outside again," he said. "We can't go into it now, anyhow. It's too risky, with Cayley about. Bill, I feel like you-just a little bit frightened. But what I'm frightened of I don't quite know. Anyway, you want to go on with it, don't you?"
"Yes," said Bill firmly. "We must."
"Then we'll explore the passage this afternoon, if we get the chance. And if we don't get the chance, then we'll try it to-night."
They walked across the hall and out into the sunlight again.
"Do you really think we might find Mark hiding there?" asked Bill.
"It's possible," said Antony. "Either Mark or-" He pulled himself up quickly. "No," he murmured to himself, "I won't let myself think that-not yet, anyway. It's too horrible."
CHAPTER XII. A Shadow on the Wall
In the twenty hours or so at his disposal Inspector Birch had been busy.