When crime scene investigators (CSIs) are called to the location of a murder, they document what they see in detail and carefully collect the evidence. Evidence isn't always obvious to the untrained eye. Readers of this remarkable book, which includes dynamic photographs, will become trained to know what to look for at a crime scene as they tag along with scientists on an intriguing case. They'll learn about various kinds of evidence as well as how it's analyzed to provide essential clues about what happened at the scene and how to find the killer.