A charge that is concocted to arrest international author (6,8)
I believe the answer is:
agatha christie
'author' is the definition.
(I've seen this before)
'a charge that is concocted to arrest international' is the wordplay.
'concocted' indicates anagramming the letters.
'to arrest' is an insertion indicator.
'international' becomes 'i' (abbreviation eg in IMF).
'a'+'charge'+'that'+'is'='achargethatis'
'achargethatis' anagrammed gives 'agathachrstie'.
'agathachrstie' enclosing 'i' is 'AGATHA CHRISTIE'.
(Other definitions for agatha christie that I've seen before include "Detective story writer" , "One who wrote" , "author" , "[THE QUEEN OF CRIME] - with 16d" .)