Continuity mistake: Helen's slipper is at about a 45° angle toward the right of the screen when Miss Willoughby finds it. When Detective Jimmy shines his flashlight on the slipper, it is facing the opposite direction. The second time Jimmy shines the flashlight, the slipper is at a steeper angle. (01:00:33)
Continuity mistake: When Miss Willoughby walks to and sits on the bed, she has some loose strands of hair, but her hair is neatly combed back when she lies on the bed. (01:05:20)
Other mistake: When the men lift the body bag out of the boat, the body bag looks dry and there is no water dripping. (01:06:47)
