Seriously, either get a pen and paper and write down the names of the major characters and associate them with each case/victim. Mother, sister, prosecutor, accused etc... It will really help. Also, when you hear music, hit fast forward for 10 or 20 seconds.
It's a good show, but it's confusing and it lingers on a bit. The show also goes back and forth between two crimes and sometimes you're not sure for a minute which crime they are speaking of at the time.
I think they could have put all the information you need into 5 episodes instead of 6.