As the door closed behind the spinster, Henry stood in deep thought, then pouring out a glass of cognac he hastily drank it. Setting down the glass, he tiptoed over to the elevator, but one look at the still figure crouching with head thrown back and sightless eyes turned to the ceiling sent him back into the center of the hall. Drawing out his handkerchief, he mopped his damp forehead. From Mrs. Whitney's bedroom came the murmur of voices, and Henry, darting a quick, searching look about the empty hall, slipped over to the door and applied his ear to the keyhole. The sound of approaching footsteps and voices warned him of the arrival of the physician, and when Vincent appeared, followed by two men, he was standing on guard near the elevator shaft. A quick word of explanation sufficed, and then the younger of the newcomers entered the elevator. He recoiled at sight of Spencer, then advancing tested the dead man's pulse and heart. "This is a case for you, Penfield," he exclaimed backing out into the hall, and without a word the coroner took his place beside Spencer. The young physician turned to Vincent. "Didn't you tell me that someone was ill and required medical assistance? Mr. Spencer is dead; I can do nothing for him." Without answering, Vincent tapped on Mrs. Whitney's door, and Whitney's voice bade him enter. "Dr. Hall, sir," announced the butler. "Want him to come in, sir?--Yes, sir; this way, Doctor," and he pulled to the door after the physician. The elevator drew Vincent's eyes as a magnet draws steel, and he started violently at sight of the coroner beckoning to him from its entrance. "Call up Police Headquarters," directed Penfield. "Tell them I am here, and ask to have Detective Mitchell and three plain-clothes men sent over at once. Be quick about it," and his peremptory tone caused the agitated butler to hasten his usually leisurely gait. Henry started to follow him, but the coroner called him back. "Explain to me exactly what happened when Mr. Spencer was found," he said, stepping into the hall. The tale lost nothing in Henry's telling, and Penfield was gnawing his fingernails, a trick he had if perplexed, when Vincent escorted the detective and plain-clothes policemen into the hall. The coroner rose with alacrity. "Glad you could come, Mitchell," he said. "Let me put you in possession of all facts so far known," and he repeated all that Henry had told him. Mitchell listened in silence; only the gleam in his eyes attested his interest, as his face remained expressionless. And that gleam deepened as he stepped into the elevator and examined Spencer. When he came out he was wrapping his handkerchief around a knife. Exchanging a glance with the coroner, he turned to Vincent. "Show my men over the house," he directed, "and you," addressing Henry, "inform Mr. Whitney that Coroner Penfield and I would like to see him at once."