Inconsistencies as some nail a criminal (9)
I believe the answer is:
anomalies
'inconsistencies' is the definition.
'some nail a criminal' is the wordplay.
'criminal' is an anagram indicator.
'some'+'nail'+'a'='somenaila'
'somenaila' with letters rearranged gives 'ANOMALIES'.
'as' is the link.
(Other definitions for anomalies that I've seen before include "They're unusual or different from what is expected" , "Deviations from the normal or common" , "exceptions" , "odd events" , "They deviate from what is standard, normal, or expected" .)