Horror film assistant (4)
I believe the answer is:
igor
'horror film assistant' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for igor that I've seen before include "Prince --, opera by Borodin" , "-- Stravinsky, composer" , "Russian man" , "Stravinsky, for example" , "Hero of Borodin" .)