Simenon's detective (7)
I believe the answer is:
maigret
'simenon's detective' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for maigret that I've seen before include "Georges Simenon's detective" , "Policeman" , "cracker?" , "Fictional detective" , "Simenon's Inspector" .)