1942 Hitchcock thriller (8)
I believe the answer is:
saboteur
'1942 hitchcock thriller' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for saboteur that I've seen before include "Rue boast about one who commits industrial espionage" , "One causes damage for political reasons" , "One deliberately damaging equipment etc" , "He destroys in order to subvert" , "One deliberately damages" .)