I've seen dozens of examples and edits in both directions.
Which is a better question:
- In Les Miserables what was Val Jean's crime?
- What was Val Jean's crime?
I am also of the opinion that the film name is redundant due to the presence of the tag. There might be exceptions for this. But usually a clear, concise title along with tags should be all is required. Other information can be added in the body.
I would personally prefer to see a loose no tags in titles policy purely for reasons of consistency. If "In Les Misérables, what was Val Jean's crime?" is better in that particular instance, it is a purely subjective preference. On one screen, it might fit perfectly on a single line. But how about on a mobile? When will the use of the "In Les Misérables" prefix cease to be better? When the overall question goes over a certain length? Or, when the title is longer than a certain length? "When does a few become several?"
Furthermore, imagine a front page full of questions pertaining to a new movie, each post prefixed with the movie's name.
"In 'Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb', why is the American President named Merkin Muffley?"
I agree with Liath, in general the movie name should not be required, especially if it crowds the title and makes it unnecessarily long.
However I don't think we should say that they must not be included, and the first example shown in the question "In Les Miserables what was Val Jean's crime?" is probably the better in this case.
I think the film title in the question title helps make them more readable, and so it's fine if it's included.
My own opinion, I feel the film name is superfluous as it is already included in the tag
If the title provides clarity, I say include it.
Take for example: What were the men building in the opening scene of S06E07?
I found this through Hot Network Topics, which obviously don't include tags