Horror film burden (5)
I believe the answer is:
curse
'horror film burden' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for curse that I've seen before include "Imprecate" , "Invocation of evil; swear" , "Utter obscenities" , "Anathema" , "Blaspheme; damn" .)