This is a thrilling mystery novel titled "The Nancy Drew Files: Bad Medicine" by Carolyn Keene. It was published by Simon Pulse in 1989 and is in mass market format. The book is written in English and is perfect for young adults who love mysteries and detective stories.

The story revolves around Nancy Drew, the protagonist, who is trying to solve a mystery. The book has a weight of 3 oz and is a great addition to any book collection. Get your hands on this exciting novel today and discover the mystery that lies within its pages.