Davontae Sanford was released Wednesday from prison after serving nine years for a murder to which he confessed, but the state now doubts he committed. Sanford is 23, but was 14 when he said he’d killed four people inside a Detroit home. He is blind in one eye because someone had thrown an egg at him when he was nine. As a teenager, he was enrolled in special-education classes. He lived in a rough part of Detroit and tried to fit in by claiming to be part of a gang, or bragging about fights he’d never had. Sanford was an unlikely suspect. So it made more sense when another man, a Detroit contract killer named Vincent Smothers, confessed to the crime in 2008.