Creepy, a bit like CIA agent? (6)
I believe the answer is:
spooky
'creepy' is the definition.
(thesaurus)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for spooky that I've seen before include "Rather frightening" , "Eerie" , "Chilling" , "weird" , "Sinister, ghostly" .)