CHAPTER XV

THE MURDERER IN THE HOUSE (_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 manne…