Writer spreading lies on TV (8)
I believe the answer is:
novelist
'writer' is the definition.
(I know that novelist is a type of writer)
'spreading lies on tv' is the wordplay.
'spreading' is an anagram indicator.
'lies'+'on'+'tv'='liesontv'
'liesontv' with letters rearranged gives 'NOVELIST'.
(Other definitions for novelist that I've seen before include "King maybe" , "Spark produced, perhaps" , "I've written" , "Book writer" , "Writer of long stories" .)