"How large a dose was given?"
"I don't know, as there were no indications of it in the gastric contents."
"Then how was the drug administered?"
"Through the blood."
"By means of the knife?"
The deputy coroner looked puzzled. "Possibly," he admitted. "But I could find no trace of the poison left on the knife blade. There was no mark on the body to show how the poison was administered."
"At what hour did death occur?"
"Between three and four in the morning, judging by the condition of the body."
"Was there any indication, Doctor, of resistance on the part of the deceased? Did he make an effort to defend himself."
"No, Judging from his expression and the condition of the muscles I should say that Mr. Spencer never knew what killed him, never knew even that his life was threatened."