The —, 1990 film drama starring Derek Jacobi in dual roles (4)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
fool
(Other definitions for fool that I've seen before include "Ass - clown" , "Jester; dupe" , "Idiot" , "Sweet - trick" , "` `More people know Tom .... that Tom .... knows' '" .)