William J. Hadden represented Detective Andrew Purdy during a volatile stretch of the criminal trial in September 1995, when the defense was aggressively pursuing Brady material and challenging law enforcement credibility. He appeared across several hearings as the defense sought Purdy's personnel records through a Pitchess motion and probed allegations that a police officer had called a deputy district attorney a liar under oath during an Internal Affairs investigation. Hadden's involvement coincided with the broader battle over Detective Mark Fuhrman's invocation of the Fifth Amendment, placing Purdy's situation squarely within the defense's campaign to expose misconduct within the investigation.