Simenon's detective (7)
I believe the answer is:
maigret
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">simenon's detective</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for maigret that I've seen before include "Georges Simenon's detective" , "Policeman" , "cracker?" , "Fictional detective" , "Simenon's Inspector" .)