bowed jerkily without speaking, and smoothed his moustache nervously with an unsteady hand.
"Sproot tells me, doctor," said Markham, "that you did not hear the shot fired in Rex's room."
"No!" The fact seemed both to puzzle and disturb him. "I can't make it out either, for Rex's door into the hall was open."
"You were in Miss Sibella's room, were you not?" Vance had halted, and stood studying the doctor.
Von Blon lifted his eyebrows.
"I was. Sibella had been complaining about"
"A sore throat or something of the kind, no doubt," finished Vance. "But that's immaterial. The fact is that neither you nor Miss Sibella heard the shot. Is that correct?"
The doctor inclined his head. "I knew nothing of it till Sproot knocked on the door and beckoned me across the hall."
"And Miss Sibella accompanied you into Rex's room?"
"She came in just behind me, I believe. But I told her not to touch anything, and sent her immediately back to her room. When I came out into the hall again I heard Sproot phoning the District Attorney's office, and thought I'd better wait till the police arrived. After talking over the situation with Sibella I informed Mrs. Greene of the tragedy, and remained with her until Sproot told me of your arrival."
"You saw no one else up-stairs, or heard no suspicious noise?"
"No one—nothing. The house, in fact, was unusually quiet."
