Factual error: Professor Stemmler tells Solo that the hypodermic he's just been injected with contained water rather than the Minus-X drug. He'd have been better off with the drug. An injection of plain water can be lethal: it puts oxygen bubbles into the blood stream. Solo should be writhing in agony, or at the very least, very, very uncomfortable.

Other: Waverly asks Illya to move the map on the display screen more to the left. Illya touches a button, and the map moves - to the right.