The case before the Supreme Court on Wednesday sounded like a television movie, a tale of wrongful imprisonment and the slow, inexorable wheels of justice. Prosecutors under pressure to close the case of a cop killer settle on two young African Americans. They fabricate evidence, coerce perjury and bury the investigation of a white suspect.A sympathetic prison barber unearths the investigative records that eventually lead courts to free the convicted men after years behind bars. And the men seek retribution for the prosecutors who framed them. But here's the twist: The prosecutors say that they can't be sued for anything...