hi,
I assume that you have already done Crime and Law and Society is on the way....
I strongly suggest a full and detailed revision plus making a list of LCMD for Crime. this can be useful as the Half-yearly comes closer.
If you have more time, do text-book summary for Law and Society, not a very long part of the HSC course, you can actually do this by yourself... THen you actually do this topic at school, you'll have more time to research case studies.....