Extract conclusion from judge, in accordance with law (6)
I believe the answer is:
elicit
'extract' is the definition.
(I know that extract can be written as elicit)
'conclusion from judge in accordance with law' is the wordplay.
'conclusion from' suggests the final letters.
'in accordance with law' becomes 'licit' (I can't justify this - if you can you should give a lot more credence to this answer).
The final letter of 'judge' is 'e'.
'e'+'licit'='ELICIT'
Can you help me to learn more?
(Other definitions for elicit that I've seen before include "Get out" , "Bring something out into the open" , "Draw out (response, information etc)" , "Brings something out into the open" , "Extract" .)