Los Tocayos Carlos - a comprehensive investigation by Columbia Law School Professor James Liebman and a team of students which uncovers evidence that Carlos DeLuna, a poor Hispanic man with childlike intelligence who was executed in Texas in 1989, was innocent. The issue of The Columbia Human Rights Law Review, entirely dedicated to this investigation, is available at this website.
Neurolaw - The Brain on the Stand
The Prison Policy Initiative conducts research and advocacy on incarceration policy. Some interesting data include the proliferation of prisons in the US over the last century, disenfranchisement of potential black voters, global incarceration rates and percentage of US population under control of the criminal justice system.