When Bill is released from prison, he goes to a pool hall. He proceeds to check the trueness of his chosen cue stick by rolling it across a table. But, in the next shot, there are balls on the table where he just rolled his stick.
The story takes place in England, where automobiles and trucks are right-hand drive; the truck Bill drives is left-hand drive. Caveat: There were many U.S. Army vehicles like this left in the U.K. after the war. This one looks like it could have been used in the war as an ambulance as it appears to be a Dodge WC-series 1/2-ton model. Other vehicles in the film are left-hand drive.
When Bill is about to receive the first of his 18 lashes with the cat o' nine tails, Burt Lancaster reacts before the whip strikes him.
Near the beginning when Burt Lancaster is hiding in Joan Fontaine's apartment, just after the alarm clock rings, Joan Fontaine says "nothing incriminating", but her mouth doesn't match those words.