The most common and most likely answer to this crossword clue is the 10 letter word ENTRAPMENT
I've seen this crossword clue in The Daily Telegraph
E
N
T
R
A
P
M
E
N
T
More clues leading to the result ENTRAPMENT
- Lure modern musicians to wear camp gear head to toe
- Film guys on strike in billowing tent
- Mason’s beginning to enter unexpectedly repentant defendant’s plea?
- Luring into committing crime, strange pattern overwhelms men
- Enticing and arresting new role backed by chaps in film
- After ten rounds men part, resorting to an underhand tactic
Buddy explains!

The straight part
We know that "Film" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case film = entrapment.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does ENTRAPMENT mean?
ENTRAPMENT noun- The state of being entrapped.
- Action by law enforcement personnel to lead an otherwise innocent person to commit a crime, in order to arrest and prosecute that person for the crime.
- A method of isolating specific cells or molecules from a mixture, especially by immobilization on a gel.