(Tuesday, November 30; 12.30 p. m.)
When Snitkin and Burke had gone Vance turned from the window and strolled to where the doctor was sitting.
"I think it might be well," he said quietly, "if the exact whereabouts of every one in the house preceding and during the shooting was determined.—We know, doctor, that you arrived here at about a quarter past ten. How long were you with Mrs. Greene?"
Von Blon drew himself up and gave Vance a resentful stare. But quickly his manner changed and he answered courteously:
"I sat with her for perhaps half an hour; then I went to Sibella's room—a little before eleven, I should say—and remained there until Sproot called me."
"And was Miss Sibella with you in the room all the time?"
"Yes—the entire time."
"Thank you."
Vance returned to the window, and Heath, who had been watching the doctor belligerently, took his cigar from his mouth and cocked his head at Markham.
"You know, sir, I was just thinking over the Inspector's suggestion about planting some one in the house to keep an eye on things. How would it be if
