Good call about hostile interrogation (8)
I believe the answer is:
grilling
'interrogation' is the definition.
(thesaurus)
'good call about hostile' is the wordplay.
'good' becomes 'g' (abbreviation).
'call' becomes 'ring' ('ring' can be a synonym of 'call'**).
'about' is an insertion indicator.
'hostile' becomes 'ill' ('ill' can be similar in meaning to 'hostile').
'ring' placed around 'ill' is 'rilling'.
'g'+'rilling'='GRILLING'
(Other definitions for grilling that I've seen before include "Severe questioning - in oven?" , "Cooking by direct exposure to radiant heat" .)