Actor's representative (5)
I believe the answer is:
agent
'actor's representative' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for agent that I've seen before include "Person who does business on behalf of another" , "that may be secret?" , "Spy - broker" , "Middleman" , "Double-zero-seven, for example" .)