“All right. Who’s the fourth?”
“Doctor George Lukens.”
“Of the Telman Hospital,” grunted the inspector.
“He was Marchand’s physician,” explained the detective. “He came here tonight after receiving a telegram from Marchand. The old man was not well. He wanted the doctor to be here when he arrived.”
“A good group of witnesses,” commented Klein.
“More than that,” declared Cardona. “They were instrumental in bringing the police immediately upon Marchand’s death.
“This case puzzles them as much as it does me. If there are clews to Marchand’s death — whatever may have caused it — they have supplied important items of information that will prove valuable.”
“For instance?”
“Lukens, to begin with.”
“Marchand had a weak heart. He had returned from a long trip. Lukens, as his physician, thought at first that heart failure was the cause of Marchand’s death.