Right clue finally leading to wrong answer (6)
I believe the answer is:
retort
'answer' is the definition.
(retorting is a kind of answering)
'right clue finally leading to wrong' is the wordplay.
'right' becomes 'r' (common abbreviation).
'finally' indicates one should take the final letters.
'leading to' means one lot of letters go next to another (some letters go before or lead others).
'wrong' becomes 'tort' (legal term**).
The final letter of 'clue' is 'e'.
'r'+'e'+'tort'='RETORT'
(Other definitions for retort that I've seen before include "Comeback - laboratory vessel" , "Witty reply" , "swift return" , "Answering remark" , "Lab equipment" .)