Alstory Simon was freed after serving 15 years for a double murder after prosecutors questioned the evidence against him, Slate's Beth Ethier reports. Now Simon is suing a former journalism professor that once led an Innocence Project class at the Medill School of Journalism, his defense attorney and a private investigator. Simon alleges that the defendants conspired to get him to confess to a fatal shooting for which then-professor David Protess' students sought to exonerate another man.