"He was in the hands of a sergeant de ville."
"He was under arrest?"
"Yes."
"For what offense?"
"I never inquired, and the day following my niece and I started for London."
"You have no reason to suspect that Alphonse Donetti is in the United States, in fact in New York?"
"The suggestion did not arise in my mind until you began to question me about him, then I did ask myself the question: Could it have been Alphonse Donetti who sent me that warning note?"
The detective meditated a long time and then said:
"The chances are that Alphonse Donetti sent you that warning note."
"I cannot think who else could have sent it, and yet I have no knowledge that he is in the United States."