Thomas Goldstein (plaintiff) was convicted of murder in 1980, based in part on the testimony of a jailhouse informant. In 1998, Goldstein filed a habeas corpus action alleging that the informant’s testimony was false, the informant had previously received favorable treatment for testifying for the prosecution, and, the Los Angeles County District Attorney’s Office should have disclosed this previous favorable treatment. Goldstein alleged that the failure to provide this information, which could have been used to impeach the informant, lead to his erroneous conviction. The trial court agreed with Goldstein and ordered the state to either provide a new trial or to release Goldstein. The court of appeals affirmed, and the state released Goldstein. Goldstein then sued the Los Angeles County district attorney and the chief deputy district attorney (defendants) under § 1983, alleging that the failure to communicate the informant’s previous testimony-related rewards violated his constitutional rights. Goldstein also alleged that this failure resulted from a lack of adequate training and supervision of prosecutors and from a failure to institute an information system about informants. The prosecutors moved to dismiss the lawsuit, claiming absolute immunity. The trial court denied the motion to dismiss, ruling that the allegations complained of administrative, not prosecutorial conduct. The prosecutors appealed to the United States Court of Appeals for the Ninth Circuit, which affirmed. The prosecutors then petitioned the United States Supreme Court for review.