Foreign article about piece of fiction (5)
I believe the answer is:
alien
'foreign' is the definition.
('alien' can be a synonym of 'foreign')
'article about piece of fiction' is the wordplay.
'article' becomes 'an' (indefinite article).
'about' is an insertion indicator.
'piece of fiction' becomes 'lie' (I've seen this before).
'an' enclosing 'lie' is 'ALIEN'.
(Other definitions for alien that I've seen before include "repugnant" , "Creature from another planet" , "exciting film based in space" , "Being from another world" , "coming from overseas" .)