"How—was he murdered?"
"Strangled with a fine cord," Wrayson answered.
"In the cab?"
"There or inside the building! It is impossible to say."
"And no one was ever tried for the murder?"
"No one," Wrayson answered.
Duncan swallowed a glassful of wine.
"But my sister," he said, "was in his rooms—she might have seen him!"
"Your sister's name was never mentioned in the matter," Wrayson said. "I was the only witness who knew anything about her—and—I said nothing."
Duncan drew a little breath.