Detective with details about ordinary victim (6)
I believe the answer is:
pigeon
'victim' is the definition.
(thesaurus)
'detective with details about ordinary' is the wordplay.
'detective' becomes 'pi' (private eye).
'with' means one lot of letters go next to another.
'details' becomes 'gen' (I've seen this in other clues).
'about' indicates putting letters inside.
'ordinary' becomes 'o' (abbreviation e.g. O-Levels).
'gen' going around 'o' is 'geon'.
'pi'+'geon'='PIGEON'
(Other definitions for pigeon that I've seen before include "Common dove" , "Homing bird" , "Baby" , "Dove-like bird" , "Trafalgar Square bird?" .)