A dead body in a railroad yard, a teenager's diary, security-camera footage, maps, interviews, and forensic evidence. does it all add up to murder? And more importantly, is Amanda, the diary's author, the prime suspect or is there another killer on the loose? The reader becomes the forensic investigator in this innovative, interactive whodunit that's full of real science and packed with eye-popping artwork by one of today's sharpest graphic illustrators.

As the mystery unfolds, readers look for clues hiding on multiple levels within the story and check their results against the Crime File, which contains the investigating team's notes on the case. As they progress deeper and deeper into the book, they get closer to uncovering the truth.