Hero (and common criminal) in Fifty Shades of Grey ? (10)
I believe the answer is:
monochrome
'in fifty shades of grey ?' is the definition.
'hero and common criminal' is the wordplay.
'and' is a charade indicator (letters next to each other) (I've seen this in other clues).
'criminal' is an anagram indicator.
'hero' after 'common' is 'commonhero'.
'commonhero' is an anagram of 'MONOCHROME'.
(Other definitions for monochrome that I've seen before include "Black-and-white" , "work of art" , "without varying tone" , "Dull" , "In one colour" .)