Nemo's creator (5)
I believe the answer is:
verne
'nemo's creator' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for verne that I've seen before include "Science-fiction writer" , "Jules --, French author" , "See 14 Across" , "Jules --, French writer" , "French novelist" .)