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3-D Mug Shot Light Source Variation (click and drag in image, left or right) Click and drag on the image to show how investigators using the Lincoln Laboratory system could vary light sources to help witnesses identify suspects. Chronology of a Murder | Science in the Courtroom Create a DNA Fingerprint | 3-D Mug Shot | Cleared by DNA Resources | Transcript | Site Map Editor's Picks | Previous Sites | Join Us/E-mail | TV/Web Schedule About NOVA | Teachers | Site Map | Shop | Jobs | Search | To print PBS Online | NOVA Online | WGBH © | Updated November 2000 |