Greek detectives about to apprehend men (5)
I believe the answer is:
doric
'greek' is the definition.
(Doric is an example)
'detectives about to apprehend men' is the wordplay.
'detectives' becomes 'cid'.
'about' is a reversal indicator.
'to apprehend' is an insertion indicator.
'men' becomes 'or' (I've seen this in other clues).
'cid' written backwards gives 'dic'.
'dic' enclosing 'or' is 'DORIC'.
(Other definitions for doric that I've seen before include "A classical style of architecture with fluted columns" , "Type of classical architecture" , "Type of column" , "Classical building style" , "Ancient dialect" .)