Could criminal man be hidden?` (7)
I believe the answer is:
clouded
'hidden?'' is the definition.
(clouding is a kind of hiding)
'could criminal man' is the wordplay.
'criminal' is an anagram indicator.
'man' becomes 'ed' (short for Edward).
'could' with letters rearranged gives 'cloud'.
'cloud'+'ed'='CLOUDED'
'be' acts as a link.
(Other definitions for clouded that I've seen before include "Sort of leopard" , "Not transparent" , "-- Leopard; -- yellow" , "not clear" , "Opaque; overcast" .)