For nearly three years, the Us & Them team has tracked the case of James Means - a 15-year-old boy who was shot and killed in Charleston, WV, by William Pulliam, who was 62 years old at the time. The case got national attention partly because Pulliam is white and Means was black. It was one of a number of shootings that focused on questions about racial injustice in our legal system. A week ago, it seemed like there was conclusion to the protracted prosecution, when Pulliam agreed to plead guilty to second degree murder. This week, he wrote to the judge and asked to revoke his plea.