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.
Who Killed Cynthia Royal? - S1-E12
Continuity mistake: In the establishing shot of the traveling limo, we can see that there's only one passenger in the back seat. But when the shot cuts to the interior of the car, both Burke and Tim are in the back. (00:26:30)