Mystery Writing PowerPoint. How to write a mystery story. Do your students like detective stories? Have your students write a mystery story using the strategies presented in this PowerPoint presentation with animated graphics. How to write a good beginning, middle, and end, and use clues and a red herring to engage the reader. Start a class detective agency, where students can become detectives and solve the mysteries. Supports common core state standards. Animations and sounds. 24 slides.