A criminal defendant, charged with participating in a prescription drug counterfeiting ring, has lost his bid to force the writer of a book on the scheme to turn over information related to her investigation, an appellate court has ruled.

The Appellate Division, Second Department, held that the qualified privilege granted to journalists under New York’s so-called “Shield Law” precluded Paul Perito from obtaining non-confidential information from Katherine Eban, the author of “Dangerous Doses: A True Story of Cops, Counterfeiters, and the Contamination of America’s Drug Supply.”