Direct film depicting traitor (8)
I believe the answer is:
turncoat
'traitor' is the definition.
(I know that turncoat is a type of traitor)
'direct film' is the wordplay.
'direct' becomes 'turn' (I can't explain this - if you can you should believe this answer much more).
'film' becomes 'coat' (I've seen this in other clues).
'turn'+'coat'='TURNCOAT'
'depicting' acts as a link.
Can you help me to learn more?
(Other definitions for turncoat that I've seen before include "Traitor with inverted garment" , "Actor nut may be a traitor" , "Traitor with reversed garment" , "One betraying party" , "Deserter to opposition" .)