People v. Wilson
Supreme Court of Illinois
182 N.E.2d 203 (1962)
Wilson (defendant) was charged with narcotics-sale crimes and sought contact information for a federal informant to support an entrapment defense, but the prosecution gave her only the address of a federal narcotics office. A federal agent later testified at trial that he had paid the informant cash and put her on a train out of state. Wilson moved to compel the informant's production both before and during trial; the court denied the motions, concluding the informant's testimony wouldn't help Wilson. Wilson was convicted and appealed.
Whether a criminal defendant is denied a fair trial when the prosecution intentionally removes a witness from the trial jurisdiction and the court refuses to compel the witness's production.