"Shut but not snibbed, sir."
Ned turned to Bisset.
"Did Sir Reginald ever forget to snib the windows, supposing one happened to be open?"
"Practically never, sir."
"Last thing before he left the room, I suppose?" said the lawyer.
The butler hesitated.
"I suppose so, sir," he admitted, "but of course I was never here to see."
"Exactly!" said Simon. "Therefore one can draw no conclusions as to whether the window had been standing all the time just as it is now, or whether it had been opened and shut again from the outside; seeing that Sir Reginald was presumably killed before his usual time for looking to the windows."
"Wait a bit!" said Ned. "I was assuming a window had been open. But were the windows fastened before Sir Reginald came in to sit here last thing?"
"Certainly they were that," said the butler emphatically.
"It was a mild night, he might have opened one himself," replied the Procurator Fiscal. "Or supposing the man had come in and left again by the door, what's more likely than that he unsnibbed the window to make people think he had come that way?"
"He would surely have left it wide open," objected Ned.
"Might have thought that too obvious," re-
