Fear, perhaps, behind son stopping Europeans finding fugitive (7)
I believe the answer is:
escapee
'fugitive' is the definition.
(I know that escapee is a type of fugitive)
'fear perhaps behind son stopping europeans' is the wordplay.
'fear perhaps' becomes 'cape' (I can't justify this - if you can you should give a lot more credence to this answer).
'behind' means one lot of letters go next to another.
'son' becomes 's' (genealogical abbreviation for son).
'stopping' indicates putting letters inside (stopping can mean blocking a gap).
'europeans' becomes 'ee' (an abbreviation for European written twice).
'cape' after 's' is 'scape'.
'scape' inserted within 'ee' is 'ESCAPEE'.
'finding' is the link.
Can you help me to learn more?
(Other definitions for escapee that I've seen before include "One flees captivity" , "Runaway" , "One breaks out of prison" , "One who's broken out of confinement" , "Absconder, fugitive" .)