Detective's wrong to misrepresent (7)
I believe the answer is:
distort
'misrepresent' is the definition.
(I've seen this before)
'detective's wrong' is the wordplay.
'detective's' becomes 'dis' (Detective Inspector).
'wrong' becomes 'tort' (legal term).
'dis'+'tort'='DISTORT'
'to' acts as a link.
(Other definitions for distort that I've seen before include "Warp" , "Pervert" , "turn crooked" , "Twist out of shape" , "Misrepresent" .)