“I have sent for you, as it is necessary to speak on an unpleasant topic, which, however, cannot be avoided,” Mr Farrell began. “It is painful for me to open it, especially as I am urged to avoid excitement; but I have no alternative. You may remember that shortly before I was taken ill, I referred to the draft of my will which was lying in this desk.” He stretched out his hand, and laid it on the polished surface. “It was kept here with other important papers, arranged in a special manner, which I have adopted for years, partly for the sake of neatness, partly to ensure them against interference, for it is impossible that they should be touched without my knowledge. This morning, on coming downstairs, my first task was to add some memoranda to one of these papers. I opened the desk, and discovered at once that my will had been opened and read—”

He stared grimly across the room, and four flushed, bewildered faces stared back at him. The silence lasted for several moments; then Jack spoke in his haughtiest and most intolerant tone—

“You do not, of course, wish to imply, sir, that you suspect us of having any hand in the matter? I presume you want our help in unravelling the mystery? My own detective powers are not of a high order; but if you will explain your system—”

Mr Farrell interrupted him with a raised hand.

“Thank you, I prefer to make my own inquiries. As I said before, it is a disagreeable duty; but when a duty is forced upon one, the best course is to perform it in the most strict and business—like manner possible. You are the people most concerned in my will, the people who would naturally feel most interest and curiosity in seeing it; therefore, apart from sentimental considerations, on you the first suspicion must fall, and it is right that I should question you before outsiders.”

Jack’s eyes flashed. He rose from his chair and limped across the floor, as if unable to keep still.

“I am afraid it will be of little use. If a fellow is sweep enough to pry into another man’s secrets, he is equal to lying about it into the bargain, and in that case you have no chance in finding out the truth. You have been upstairs for five days. It is impossible to account for all that may have happened during that time.”

“I have been upstairs five days, as you say, but it happens that I can reduce the time to a much narrower limit. On the evening after I was taken ill, it occurred to me that I had not locked my desk the night before, as I expected to return to the library as usual after dinner. I sent James downstairs to make sure. He found it open, locked it, and brought me back the key. The lock is a patent one, and has not been tampered with, therefore whoever examined the will must have done so on Wednesday morning or afternoon.”

Victor looked up quickly.

“You allowed your man to lock it, you trusted him with the key?”