Page:Milne - The Red House Mystery (Dutton, 1922).djvu/71

 turned the body over was, 'Thank God! I was afraid it was Mark.' But why should he want to give Robert time in which to get away? And again—why run, if he did want to give him time?"

Antony went out of the house again to the lawns at the back, and sat down on a bench in view of the office windows.

"Now then," he said, "let's go through Cayley's mind carefully, and see what we get."

Cayley had been in the hall when Robert was shown into the office. The servant goes off to look for Mark, and Cayley goes on with his book. Mark comes down the stairs, warns Cayley to stand by in case he is wanted, and goes to meet his brother. What does Cayley expect? Possibly that he won't be wanted at all; possibly that his advice may be wanted in the matter, say, of paying Robert's debts, or getting him a passage back to Australia; possibly that his physical assistance may be wanted to get an obstreperous Robert out of the house. Well, he sits there for a moment, and then goes into the library. Why not? He is still within reach, if wanted. Suddenly he hears a pistol-shot. A pistol-shot is the last noise you expect to hear in a country-house; very natural, then, that for the moment he would hardly realize what it was. He listens—and hears nothing more. Perhaps it wasn't a pistol-shot after all. After a moment or two he goes to the library door again. The profound silence makes him uneasy now. Was it a pistol-shot? Absurd!