the other's direction. "There is not a scrap of evidence to support such a theory," he admitted, "but if you knew of the existence of any poisonous agent which would produce effects simulating these familiar symptoms, I should be tempted to take certain steps."
"If you are talking about poisons," said the physician, a rather startled look appearing upon his face, "there are several I might mention; but the idea seems preposterous to me. Why should any one want to harm Charley Abingdon? When could poison have been administered and by whom?"
"When, indeed?" murmured Harley. "Yet I am not satisfied."
"You're not hinting at—suicide?"
"Emphatically no."
"What had he eaten?"
"Nothing but soup, except that he drank a portion of a glass of water. I am wondering if he took anything at Mr. Wilson's house." He stared hard at Doctor McMurdoch. "It may surprise you to learn that I have already taken steps to have the remains of the soup from Sir Charles's plate examined, as well as the water in the glass. I now propose to call upon Mr. Wilson in order that I may complete this line of enquiry."
"I sympathize with your suspicions, Mr. Harley," said the physician dourly, "but you are wasting
