Line up for a storyteller (4)
I believe the answer is:
liar
'a storyteller' is the definition.
(thesaurus)
'line up' is the wordplay.
'line' becomes 'rail' (I've seen this before).
'up' says the letters should be written in reverse (in down clue: letters go upwards).
'rail' back-to-front is 'LIAR'.
'for' is the link.
(Other definitions for liar that I've seen before include "One telling untruths" , "not straight [one]" , "Teller of fibs" , "One not telling the truth" , "Pinocchio, at times" .)