The first episode to have a teaser before the opening monologue by the Control Voice. Every remaining episode of the series would do this, although most first-season teasers were flash-forward clips; all second-season teasers (and a few from the first season) were cold-opening prologues that commenced the narrative.
From this episode forward, the opening monologue by the Control Voice is shorter.
The operating theatre set was the same one as was used in the preceding episode The Architects of Fear (1963).
This is the second episode in a row where a motor vehicle is reduced to a flaming or smoldering puddle.