“Yes, I know.”
“You devil, I suppose you did think of it, then?”
“I did, Bill,” said Antony apologetically.
“Bother! I hoped you’d forgotten. Well, that knocks your theory on the head, doesn’t it?”
“I never had a theory. I only said that if they were outside, it would probably mean that the office key was outside, and that in that case Cayley’s theory was knocked on the head.”
“Well, now, it isn’t, and we don’t know anything. Some were outside and some inside, and there you are. It makes it much less exciting. When you were talking about it on the lawn, I really got quite keen on the idea of the key being outside and Mark taking it in with him.”
“It’s going to be exciting enough,” said Antony mildly, as he transferred his pipe and tobacco into the pocket of his black coat. “Well, let’s come down; I’m ready now.”
Cayley was waiting for them in the hall. He made some polite inquiry as to the guest’s comfort, and the three of them fell into a casual conversation about houses in general and The Red House in particular.
“You were quite right about the keys,” said Bill, during a pause. He was less able than the other two, perhaps because he was younger than they, to keep away from the subject which was uppermost in the minds of them all.
“Keys?” said Cayley blankly.
“We were wondering whether they were outside or inside.”
“Oh! oh, yes!” He looked slowly round the hall, at the different doors, and then smiled in a friendly way at Antony. “We both seem to have been right, Mr. Gillingham. So we don’t get much farther.”
“No.” He gave a shrug. “I just wondered, you know. I thought it was worth mentioning.”
“Oh, quite. Not that you would have convinced me, you know. Just as Elsie’s evidence doesn’t convince me.”
“Elsie?” said Bill excitedly. Antony looked inquiringly at him, wondering who Elsie was.
“One of the housemaids,” explained Cayley. “You didn’t hear what she told the Inspector? Of course, as I told Birch, girls of that class make things up, but he seemed to think she was genuine.”
“What was it?” said Bill.
Cayley told them of what Elsie had heard through the office door that afternoon.
“You were in the library then, of course,” said Antony, rather to himself than to the other. “She might have gone through the hall without your hearing.”
“Oh, I’ve no doubt she was there, and heard voices. Perhaps heard those very words. But—” He broke off, and then added impatiently, “It was accidental. I know it was accidental. What’s the good of talking as if Mark was a murderer?” Dinner was announced at that moment, and as they went in, he added, “What’s the good of talking about it at all, if it comes to that?”
“What, indeed?” said Antony, and to Bill’s great disappointment they talked of books and politics during the meal.
Cayley made an excuse for leaving them as soon as their cigars were alight. He had business to attend to, as was natural. Bill would look after his friend. Bill was only too willing. He offered to beat Antony at billiards, to play him at piquet, to show him the garden by moonlight, or indeed to do anything else with him that he required.
“Thank the Lord you’re here,” he said piously. “I couldn’t have stood it alone.”
“Let’s go outside,” suggested Antony. “It’s quite warm. Somewhere where we can sit down, right away from the house. I want to talk to you.”
“Good man. What about the bowling-green?”
“Oh, you were going to show me that, anyhow, weren’t you? Is it somewhere where we can talk without being overheard?”
“Rather. The ideal place. You’ll see.”
They came out of the front door and followed the drive to the left. Coming from Woodham, Antony had approached the house that afternoon from the other side. The way they were going now would take them out at the opposite end of the park, on the high road to Stanton, a country town some three miles away. They passed by a gate and a gardener’s lodge, which marked the limit of what auctioneers like to call “the ornamental grounds of the estate,” and then the open park was before them.
“Sure we haven’t missed it?” said Antony. The park lay quietly in the moonlight on either side of the drive, wearing a little way ahead of them a deceptive air of smoothness which retreated always as they advanced.
“Rum, isn’t it?” said Bill. “An absurd place for a bowling green, but I suppose it was always here.”
“Yes, but always where? It’s short enough for golf, perhaps, but—Hallo!”
They had come to the place. The road bent round to the right, but they kept straight on over a broad grass path for twenty yards, and there in front of them was the green. A dry ditch, ten feet wide and six feet deep, surrounded it, except in the one place where the path went forward. Two or three grass steps led down to the green, on which there was a long wooden bench for the benefit of spectators.
“Yes, it hides itself very nicely,” said Antony. “Where do you keep the bowls?”
“In a sort of summer house place. Round here.”
They walked along the edge of the green until they came to it—a low wooden bunk which had been built into one wall of the ditch.
“H’m. Jolly view.”
Bill laughed.
“Nobody sits there. It’s just for keeping things out of the rain.”
They finished their circuit of the green—“Just in case anybody’s in the ditch,” said Antony—and then sat down on the bench.
“Now then,” said Bill, “We are alone. Fire ahead.”
Antony smoked thoughtfully for a little. Then he took his pipe out of his mouth and turned to his friend.
“Are you prepared to be the complete Watson?” he asked.
“Watson?”
“Do-you-follow-me-Watson; that one. Are you prepared to have quite obvious things explained to you, to ask futile questions,
