The victim was discovered in a landfill, stuffed into a suitcase. She resembled another woman, missing for 18 months. Sure they were dealing with a serial killer, police faced the daunting task of combing through 225,000 tons of trash to find her body.

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The body of a young girl was discovered on isolated farm land near Delano, California. She had no ID, but police found mailbox and house keys in the pocket of her jeans. With no other clues, they checked the mailboxes of every apartment building in Delano... and their persistence paid off.

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In little more than a month, two women who lived in the same apartment complex were brutally murdered. The similarities of the crime scenes led police to conclude they were dealing with a serial killer who harbored an intense hatred of women... and they had to find him before he struck again.

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A mapmaker was surveying the grounds of a boy scout ranch when he came across a human skull.

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Four young adults are brutally murdered in an affluent Texas neighborhood, and the crime scene yields little evidence. The next door neighbors see two young people dressed in black walking nearby, and their descriptions are used to create composite drawings which become a key element in solving the crime.

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A couple is found dead in their Washington home and all signs point to a professional hit. A palm print and two distinct shoe impressions help police separate fantasy from reality and expose a fatal flaw in one state's inmate release procedures.

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The woman hadn't shown up for work in two days, and her boss reported her missing. When her body was found, the evidence pointed to suspects who claimed they had nothing to do with the crime. The victim, herself, would help police to prove they were lying.

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Hikers near Anchorage, Alaska discovered a body wrapped in sheets which were edged in orange stitching. Authorities hydrated the fingers and obtained a fingerprint, enabling them to identify the victim. Clinging to the sheet, they also discovered a tuft of red carpet fibers -- threads of evidence which led them straight to the killer.

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For 18 years, a man who murdered his entire family eluded the FBI. Investigators used art and forensic science to find the killer.

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When a teenaged girl goes missing, no one knows if she ran away or if she was the victim of foul play. Everyone's worst fears are confirmed when a body is found at the bottom of an isolated ravine. Police scour the crime scene, hoping to find enough evidence to identify the killer.

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