The Beast From 20,000 Fathoms

Factual error: A remarkable error. Late in the movie there is a shot where extremely large, perfectly round blood-stains are shown on the street as soldiers are shown giving chase to the wounded monster. These ignore basic physics. Whilst the source of the blood may be huge, individual blood drops would not have been proportionately larger.

RussT1

Continuity mistake: In the scene where George falls into the chasm after seeing the beast for the first time, his gloves change from being inside out and the right way around several times. Even when he is being rescued the gloves can be seen to show the leather side and then the fur side, alternating as the scene progresses.

More mistakes in The Beast From 20,000 Fathoms