Is there a word for introducing made-up events in a supposedly historical film?
Solution 1:
You could try hype (Dicionary.com, definitions 3 through 7):
(verb)
3) to intensify (advertising, promotion, or publicity) by ingenious or questionable claims, methods, etc. (usually followed by up);
4) to trick; gull.
(noun)
5) exaggerated publicity; hoopla.
6) an ingenious or questionable claim, method, etc., used in advertising, promotion, or publicity to intensify the effect.
7) a swindle, deception, or trick.
Solution 2:
The most common term for that would likely be misrepresentation.