A serial rapist stalks elderly women for nearly 20 years before escalating to murder.
A sniper targets abortion doctors and then disappears into the shadowy underground that supports and protects him. When the sniper's mission moves to murder, a city is thrown into blind panic that spreads across the country and beyond.
Top criminal investigators, forensic scientists and behavioral analysts track three serial killers.
One by one, sex workers in Spokane, Washington are being hunted down and discarded in remote wooded areas by a vicious serial killer. On each victim's head, police find his macabre calling card — a plastic bag emblazoned with an ironic Smiley Face.
Two undertakers are shot and killed while at work at a funeral home in a small Wisconsin town. The case goes cold after two years.
Officials look to state-of-the-art DNA analysis to help capture a serial killer in the Louisiana State University area of Baton Rouge.
On the outskirts of Hamilton, Ontario, a jogger makes a gruesome discovery — the partially mummified remains of a human body. Using state of the art forensics, police are able to identify the body as that of a suburban wife and mother of two.