CNN is an excellent news site.
Crime Library is an extensive collection of cases in the news both recent and historical.
Extensive database of information on the death penalty.
Google is the search enginge that will bring you to almost any topic!
Founded by NY attorney Barry Scheck, the Innocence Project is an organization that takes cases of people who say they have been wrongly convicted and try to prove them innocent. The work is done pro bono (for free).
PBS NOVA program on the Sam Sheppard Case.