"Don't you write novels?"

"Yes."

"Sensational?"

"Occasionally."

"Then you ought to be tickled to death, as the Americans say, at being mixed up in a first-rate murder. This is no ordinary crime. Several people will be older and wiser before the culprit is found and hanged."

"What Mr. Furneaux has in mind," purred Winter cheerfully, "is the curious habit of some witnesses when questioned by the police. They arm themselves against attack, as it were. You see, Mr. Theydon, we suspect nobody. We try to ascertain facts, and hope to deduce a theory from them. Over and over again we are mistaken. We are no more astute than other men. Our sole advantage is a wide experience of criminal methods. The detective of romance—if you'll forgive the allusion—simply doesn't exist in real life."

"I accept the rebuke," said Theydon. "I suppose the gray car was still rankling in my mind. From this moment I start afresh. At any rate, the man who brought me from the theater might check my recollection of the time."

Winter nodded. He was evidently pleased that Theydon was inclined to share his view of the difficulties Scotland Yard encountered in its fight against malefactors.

"Did you see or meet any one in particular while your car approached these mansions, or when you ascended the stairs?"

"No," said Theydon.