“Never.”
“I presume that most of the guests who were here last night have since left?”
“All have left. I am practically alone.”
“I shall be glad if, as soon as you can do so, you will kindly make me out a list of your guests, together with their addresses. We may not require it, but in this matter we must not overlook a single point.”
“But surely you don’t suspect any of them?” she exclaimed quickly.
“We suspect no one, at present,” he responded. “But in order to prosecute our inquiries satisfactorily, it is necessary to know exactly who was in the house at the time of the tragedy.”
“Oh, of course—of course,” she said. “I will make out the list and let you have it in the course of an hour—if that will do?”
“Excellent,” the detective said.
Bullen glanced across to a half-open door, which appeared to give entrance to the library, saying—
“If you will permit us, we will examine the Colonel’s papers; they may give us some clue. It is just possible that he received a letter making the appointment in the park.”