“That’s something! Suppose the butler locked it?”
“I don’t know why he should—unless after Mr. Harrison was murdered!”
“The stable door,” said Landis. “Well, that can wait, I guess.” He looked at Bernard. “Nice layout, isn’t it, sir? The wing must connect with the main building upstairs. So there’s at least one route for any person in the house to get from any room in the house to that Japanese bow without being seen from the front hall or the library!”
“Looks that way,” agreed Bernard shortly. “Suppose we have a look at the body now.”
Passing through the billiard-room, Landis tried the door to the sunken garden and found it unlocked. The two players looked up again but made no remark. In the hall beyond, Graham gave vent to a mirthless laugh.
“Of course those fellows wanted to leave after such a tragedy,” he grumbled, “and of course I had to ask them to stay! It’s a pleasant atmosphere here, with everybody suspecting everybody else in the house!”
“Would there be anyone in the billiard-room just at dinner time?” Landis asked him.
“It’s hard to say. Somebody might come down early and play a bit.”
“If they didn’t, it would be just as easy for anybody to get to this end of the library from outside the house altogether! The door into the sunken garden wasn’t locked, unless someone has unlocked it since the murder.”
“It probably wouldn’t be locked before dinner,” Graham told them.