17. A set of footprints, other than Von Blon's, leaving and approaching the house, is found; but the character of the snow renders them indecipherable.
18. The tracks have been made during the half-hour preceding the crime.
19. Both shootings are done with a .32 revolver.
20. Chester reports that an old .32 revolver of his is missing.
21. Chester is not satisfied with the police theory of a burglar, and insists that the District Attorney's office investigate the case.
22. Mrs. Greene is aroused by the shot fired in Ada's room, and hears Ada fall. But she hears no footsteps or sound of a door closing.
23. Sproot is half-way down the servants' stairs when the second shot is fired, yet he encounters no one in the hall. Nor does he hear any noise.
24. Rex, in the room next to Ada's, says he heard no shot.
25. Rex intimates that Chester knows more about the tragedy than he admits.
26. There is some secret between Chester and Sibella.
27. Sibella, like Chester, repudiates the burglar theory, but refuses to suggest an alternative, and says frankly that any member of the Greene family may be guilty.
28. Ada says she was awakened by a menacing presence in her room, which was in darkness; that she attempted to run from the intruder, but was pursued by shuffling footsteps.
29. Ada says a hand touched her when she first arose from bed, but refuses to make any attempt to identify the hand.
30. Sibella challenges Ada to say that it was she (Sibella) who was in the room, and then deliberately accuses Ada of having shot Julia. She also accuses Ada of having stolen the revolver from Chester's room.
31. Von Blon, by his attitude and manner, reveals a curious intimacy between Sibella and himself.
32. Ada is frankly fond of Von Blon.