Court involved with bad kidnapper (8)
I believe the answer is:
abductor
'kidnapper' is the definition.
(synonyms)
'court involved with bad' is the wordplay.
'involved with' is an anagram indicator (involved can mean confusing or complex).
'court' mixed up with 'bad' makes 'ABDUCTOR'.
(Other definitions for abductor that I've seen before include "One removing by force" , "Muscle" , "Taker (of someone)" , "Person snatching, eg, a child" , "Paris, for example" .)