A federal prosecutor’s misconduct tilted the scales of justice against Antonio Lyons, an Orlando businessman. Lyons served three years in prison before his attorney discovered statements from a witness that differed from the testimony given at trial. That was just the tip of the iceberg.

For more than a week in 2001, the jurors listened to one witness after another, almost all of them prison inmates, describe how Lyons had sold them packages of cocaine. One said that Lyons, who ran clothing shops and nightclubs around Orlando, tried to hire him to kill two drug dealers.

But the federal prosecutors handling the case did not let the jury hear all the facts.

Instead, the prosecutors covered up evidence that could have discredited many of Lyons’ accusers. They never disclosed that a convict who claimed to have purchased hundreds of pounds of cocaine from Lyons struggled to identify his photograph. And they hid the fact that prosecutors had promised to let others out of prison early in exchange for their cooperation.

An investigative project by USA Today documented 201 cases from across the nation in which federal judges found that prosecutors broke the rules. It includes a database and interactive map chronicling prosecutorial misconduct. Read the whole thing.

Check out Tim Lynch’s In the Name of Justice: Leading Experts Reexamine the Classic Article “The Aims of the Criminal Law” and Harvey Silverglate’s Three Felonies a Day: How the Feds Target the Innocent for more on the criminal justice system.