Criminal's crime? (7)
I believe the answer is:
offence
'crime?' is the definition.
(offence is a kind of crime)
'criminal's' is the wordplay.
I cannot really understand how this works, but
'criminal' could be 'fence' (someone who handles stolen goods) and 'fence' is located in the answer.
The remaining letters 'of' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for offence that I've seen before include "The action of attacking an enemy" , "Attack - crime" , "An act punishable by law" , "The handler" , "Cause of annoyance - crime" .)