Attorneys with Northwestern Pritzker School of Law’s Center on Wrongful Convictions secured the release of 28-year-old Marcel Brown, who was convicted of a 2008 murder and has spent the past decade behind bars.Brown’s release from prison comes about a month after Cook County Associate Judge Thomas V. Gainer Jr. vacated Brown’s first-degree murder conviction and granted him a new trial based on claims in his post-conviction petition. On Wednesday, prosecutors with the Cook County State’s Attorney …