“Except for my walk in the garden,” Allen laughed.
“What is your theory of the murder, Mr. Allen?”
“My theory? I suppose that someone got into the house and shot Harrison from the far end of the library.”
“Why ‘got into the house,’ Mr. Allen?” Bernard pounced. “Why not someone in the house?”
“A man like Harrison must have made many enemies,” answered their witness in surprise. “I don’t suppose there’s anyone here sufficiently furious at him to kill him!”
“How could anyone get into the house from outside?”
Allen stared and shrugged faintly, smiling at them.
“It seems to me that that’s up to you! But the murderer could have come through the sunken garden and the billiard-room and escaped again the same way, if he happened to know the house.”
“Why so he could,” said Landis pleasantly, “if he knew where the bow was and where Harrison was and how to string the bow and then how to shoot it, Mr. Allen.”
“That’s quite a lot of ‘ifs’ I’ll admit! But I don’t see who else could have killed him!”