Continuity mistake: When Webster steals a huge diamond, one of the guards comes to from the chloroform and raises the alarm before Webster has left the building. As he hurries to leave, Webster gets shot in the left arm, and he must use a truck as a battering ram to break through a garage door; he does this, but the garage door is now on the front of the truck, obstructing Webster's view, until, suddenly, it vanishes - all that's left are the side bits of the garage.
Continuity mistake: When Jim comes to see Webster, Webster is in the bath with a sponge that he constantly wipes himself with, but the sponge moves from one hand to the other, repeatedly, without him actually doing it.
Continuity mistake: When Webster breaks into his first house, he has his briefcase open, so he can get at the items he needs, but before he leaves, he picks up the torch that is sitting on his closed briefcase - he never closed his briefcase; it was open all the time.
