Continuity mistake: The date of Helen Kimble's murder is given here as Sept. 19, 1961. Previous episodes, however, had established it as occurring on Sept. 17, 1960.
Continuity mistake: When Burke's partners arrive to question Mimsy Grove, she's facing away from them, bending over to untangle her boat's mooring line. But in the very next shot, she's immediately standing up straight and has turned around to face them. (00:38:15)