Brilliant story books seen by editor (8)
I believe the answer is:
talented
'brilliant' is the definition.
(I've seen this before)
'story books seen by editor' is the wordplay.
'story' becomes 'tale' (synonyms).
'books' becomes 'NT' (New Testament).
'seen by' is a charade indicator (letters next to each other).
'editor' becomes 'ed' (abbreviation).
'tale'+'nt'+'ed'='TALENTED'
(Other definitions for talented that I've seen before include "Skilful" , "Having an unusual amount of ability" , "Endowed with gifts" , "Having natural or special ability" , "Accomplished" .)