"A shooting has occurred. Investigators have not yet found evidence. Then they look in a storm drain and find shell casings. They put the casings in a paper bag and send them to the lab to be analyzed. Find out about the techniques and tools ballistics experts use to help bring even the toughest cases to a close" -- Provided by publisher.

Includes bibliographical references (page 31) and index.

Shots fired! -- Gathering evidence -- Comparing bullets and cartridge cases -- Other firearm evidence.