“What a charming retreat you have here, Mr. Trent,” he observed.

“It is convenient,” said Anthony Trent shortly. The word “retreat” sounded unpleasantly in his ear. It had a sound of enforced seclusion. He continued to study the elder man. There was an inflection in his voice which we are pleased to term an “English accent.” And yet he did not seem, somehow, to be an Englishman. His accent reminded Trent of a man he had met casually two years before. It was at a Park riding school where he kept a saddle horse that he encountered him. From his accent he believed him to be English and was surprised when he was informed that it was Captain von Papen he had taken to be British. He learned afterwards that the Germans of good birth generally learned their English among England’s upper classes and acquired thereby that inflection which does not soothe the average American. This stranger had just such a speaking voice. Obviously then he was German and one highly connected. And at a day when German plots and intrigue engaged public attention what was he doing here?

“Mine is a business call,” said the stranger.

“You do not ask if this is a convenient hour,” Trent reminded him.

“My dear sir,” the other said smiling, “you must understand that it is a matter in which my convenience is to be consulted rather than yours.” The eyes that gleamed through the thick glasses were fixed on Trent’s face with a trace of amusement in them. The stranger had the look of one who holds the whiphand over another.

“I don’t admit that,” Anthony Trent retorted. “I don’t know your name or your errand and I’m not sure that I want to.”

“Wait,” said the other. “As for my name—let it be Kaufmann. As for my errand, let us say I am interested in a history of crime and want you to be a collaborator.”

“What qualifications have I for such an honor?”

Anthony Trent rammed his pipe full of Hankey and lit it with a hand that did not tremble. Instinctively he knew the other watched for signs of nervousness.

“You have written remarkable stories of crime,” Mr. Kaufmann reminded him. “I regret that the death of an Australian uncle permitted you to retire.”