The murder of a popular young woman in Lancaster County, Pa., is investigated.

The murder of a young woman in her Portland, Ore., apartment is investigated.

The strangulation death of an 8-year-old girl in Ocean Shores, Wash., is investigated.

The investigation into the murder of a young North Carolina woman is recounted.

A friendly night out ends in a shallow grave for a beautiful young woman and her killer evades police for decades.

When a well-liked teenage boy is found stabbed to death in his Salt Lake City, UT home, detectives leave no stone unturned in their quest to solve the murder that rocked this normally tranquil town.

Like in one of his old Hollywood westerns, a former actor is gunned down in Yuma, AZ and police chase leads across the Southwest until they finally get their man.

After a young girl describes her mother's killer as being a ninja, police attempt to work out the truth behind the child's description as they put the murderer behind bars.

The police manage to track down the killer of a disabled Denver woman and they attempt to establish whether or not she was killed for money or if there was a more personal motive for her death.

The murder of a California businessman is linked to a contract killer.

When a first-year college co-ed turns up raped and murdered, it takes a freshman cop to beat the odds and catch a killer.

The killer of a Santa Monica art teacher remains at large for years as police use every trick in their arsenal to finally hunt him down.

The leading advocate for the controversial science of cold fusion is beaten to death and investigators run the full gamut of suspects, from corporate executives to drug-crazed burglars, to find his killer.