Download or read book Karen's Mystery written by Ann M. Martin and published by . This book was released on 1991 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: When Karen's Dad loses his glasses, Karen and David Michael decide to play detectives and spend the rest of the day solving mysteries. Then Karen decides to start her own detective agency. Soon Karen discovers her pet rat Emily is missing. Can Karen's detective agency find her?