(3) How did the murderer enter and leave the study?
(4) What was the motive for the murder?
(5) Why did the doctors disagree, and which was in the right?
(6) Why did Philip Darwin put that ring on his finger and then pull it off?
(7) Whose is the blood-stained handkerchief?
(8) Where did the second bullet go?
(9) Why is there so much evidence against Mrs. Darwin, and who would most desire to injure her?
(10) Is Cora Manning the woman in the case and if so, who and what is she?
(11) What has become of Darwin's securities?
(12) What is Lee Darwin's connection with the affair?