Wrong guys in trouble (7)
I believe the answer is:
torment
'trouble' is the definition.
(torment is a kind of trouble)
'wrong guys in' is the wordplay.
'wrong' becomes 'tort' (legal term).
'guys' becomes 'men'.
'in' is an insertion indicator.
'tort' enclosing 'men' is 'TORMENT'.
(Other definitions for torment that I've seen before include "Severe pain" , "More TNT (anag.)" , "Harass" , "Physical or mental pain" , "Cause great pain to" .)