Three times in the past 14 months, federal judges have ruled that ex-Marine Thomas Lee Goldstein was improperly convicted of murder. Still, he sits in jail in Los Angeles. Henry Weinstein's story in the L.A. Times says that, with no gun, fingerprints or other physical evidence, the case against Goldstein came down to the word of a jailhouse informant whose credibility is, to say the least, shaky.