Novelist gets start of story wrong (5)
I believe the answer is:
amiss
'wrong' is the definition.
(I know that wrong can be written as amiss)
'novelist gets start of story' is the wordplay.
'novelist' becomes 'Amis' (Kingsley or Martin Amis).
'gets' means one lot of letters go next to another.
'start of' suggests taking the first letters.
The first letter of 'story' is 's'.
'amis'+'s'='AMISS'
(Other definitions for amiss that I've seen before include "Revealing fault" , "Mistaken" , "Unsuitable" , "In an inappropriate way" , "Fallacious" .)