Adventurous boy from Surrey was motivated to return (3,6)
I believe the answer is:
tom sawyer
'adventurous boy' is the definition.
(I've seen this before)
'from surrey was motivated to return' is the wordplay.
'from' says the answer is hidden in the clue.
'to return' says the letters should be written backwards.
'reywasmot' can be found hidden inside 'surrey was motivated'.
'reywasmot' written backwards gives 'TOM SAWYER'.
(Other definitions for tom sawyer that I've seen before include "American boy" , "book's hero" , "Mark Twain's adventurous boy" , "American hero" , "Work" .)