Doctor Fredericks entered as Cardona finished speaking. The physician’s face was both solemn and perplexed.
“Glenn unquestionably died from the effects of a most virulent poison,” declared Fredericks.
“I thought at first it might have been an overdose of some medicine or a narcotic, but now I regard those possibilities as being out of the question. What I should like to learn is how the poison was administered.
“An autopsy should reveal its nature, but it may not give a clew to how the dose was taken.”
Accompanied by Biscayne, Cardona descended to the street, and made a thorough inspection of the taxicab, which was being watched by one of the policemen. The search revealed nothing.
Back in the apartment, Cardona made a call to headquarters. He left orders there, then started a systematic search of Louis Glenn’s abode. He found nothing that excited his suspicion.
He questioned the valet, and obtained information regarding Glenn’s habits. The man stated that his employer had never, to his knowledge, indulged in narcotics, nor did he use liquor.
This statement was not only in keeping with the inspection which Cardona had made; it was also corroborated by a telephone call from Glenn’s physician, who had been notified of the death.
Cardona learned that Louis Glenn had seldom used medicine of any description; that he had been in excellent health and particularly proud of his physical condition. He was a cigarette smoker, but mild in that habit.
During the search, Cardona came across some empty boxes that had contained cigarettes. These were of an imported variety, a blend which Glenn constantly used according to the valet.