Entertainer accepting a dodgy role on stage (7)
I believe the answer is:
macduff
I'm afraid I can't even guess how this answer relates to the clue.
Can you help me to learn more?
(Other definitions for macduff that I've seen before include "His family killed by Macbeth" , "Slayer of 13" , "Shakespearean character" , "Murderer of Macbeth" , "One told to lay on" .)