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Police believed a pair of double homicides in Nebraska, five years apart, might be connected. Investigators working to solve the crimes feared the killer might strike again.

A visit to Alcatraz in San Francisco Bay to examine the 1962 escape of three inmates and recall the legends of "the Rock" such as Al Capone and the Birdman of Alcatraz. Also: the search for a California couple who are suspects in an attempted-murder case.

A clumsy bank robber; an underground drug route between Mexico and the US; alleged paranormal events in a Texas subdivision.

A purportedly haunted ranch in Texas; an abandoned car and its missing driver; claims of corruption at a California prison. Also: a doctor raises suspicions.

A Wyoming amnesiac; two jailbreaks; a double homicide in Oklahoma. Also: a cyanide-laced potion kills five on St Croix.

An Oregon murder probe. Also: a hacker penetrates the CIA; a site of Old West gunfights is visited; bank robbers take hostages to execute their crimes.

A look at how inmates pass time in San Quentin State Prison. Included: an inmate who is creating a wall mural with brushes made from his hair and paint made from ink, shampoo and toothpaste; an inmate who cuts himself with his fingernails.

Arapahoe County, Colorado, 1983. The body of Sylvia Quayle is discovered by her distraught father in her Cherry Hills home.

DNA science finally identifies both killer and victim from a murder that took place back in Florida in 1991.

Tacoma, Washington State, 1986. 12-year-old Michella Welch goes missing in Puget Park.

An inmate who has served almost 20 years faces the prospect of release.

An annual poetry slam, which enables inmates to express themselves, is highlighted. Also: how inmates are classified based on the severity of their crimes and behavior.

When Cassy Farrington was found dead in her bathtub, her parents were determined to get answers, stopping at nothing until they found justice.

When a University of Utah athlete is found murdered on campus, investigators learn that she had reached out to the campus police for help multiple times before her death.

Big sky country and a difficult highway set the scene of a fatal car crash. Questions arise as to whether this was an accident or a crime and whether the secrets masking the truth are hiding in text messages sent just before a car crossed the line.

A brother seeks a long-lost sister. Also: the Boston Strangler; two dead teenage runaways; speculations on the development of military aircraft.

Arson begets a tragedy in Kansas City; four campers claim they were abducted by aliens; a woman leaves her apartment goes missing. Also: a fugitive's missing girlfriend.

A missing stripper; the murder of a Northwest Airlines employee; schemes by a man who assumed the names of soap-opera stars.

An allegedly cursed chair; a briefcase bomber; a home-contracting scheme. Also: a woman vanishes after telling her family about a trip she planned to take with her boyfriend.

A government intelligence officer vanishes; strange noises from the attic disturb a couple; a murder suspect disappears before he can be charged with the crime. Also: sleepwalkers.

Kenya Monge and Lydia Tillman didn't know each other but they would be forever related, both falling prey to a smooth-talking stranger with a terrifying secret.

Nikki Whitehead was a single mom working toward a brighter future. She found love, moved into a nice neighborhood, and enrolled in college. Then, tragedy struck. Police searched for answers but one thing was certain. This crime was personal.

Newsmagazine that delivers viewers stories ranging from mysteries to documentaries.

Young nursing student Michelle Le had disappeared. Something drew her out to her car, right before cameras caught the car peeling away. Next, there was a series of strange texts. It is discussed whether Michelle was missing or murdered.

An inmate who has served almost 20 years faces the prospect of release.

In 1984, the bruised and bloodied body of 25-year-old Naval recruit Pamela Cahanes is found in a lot.

San Diego 1969. 23-year-old Mary Scott is visited by a friend when she fails to show up for work.

Las Vegas, Nevada, June 1 1989. Stephanie Isaacson sets off on her morning walk to school; she never makes it.

The regrets of inmates are detailed via Scared Straight-type programs for teenagers and messages from prisoners recorded on personal video cameras.

Inmates' actions and their consequences.

A mother of two died after a minor fender bender, leaving loved ones confused and seeking answers.

A young woman was found almost dead in the middle of the road. There was little evidence to go on, so investigators needed to find out what happened from the victim herself, but the problem was that she could not remember.

Wealthy residents felt safe in their gated community, but it was not safe for one millionaire murdered in his waterfront home. Police investigated but the case grew cold. Turned out the key to solving it, or two keys, were right at the front door.

Included: a teenage amnesiac; evidence linked to the yeti; a marine's death.

Psychic David Morehouse; a casino owner's death. Also: a pilot vanishes during a flight; grisly remains are discovered by a homeowner while digging a swimming pool.

Boxer Sonny Liston's death; alleged UFO sightings over Belgium. Also: a car theft leads to murder.

A hostage scheme backfires; a wife vanishes during a vacation in Nevada; car accidents allegedly turn two people into psychics.

A California amnesiac. Also: a young camper vanishes in Canada; a stone etched with cryptic symbols is discovered.

Newsmagazine that delivers viewers stories ranging from mysteries to documentaries.

A wealthy doctor's wife was found dead on Valentine's Day. She had enemies, but he was a suspect regardless.

The murder of an art student from a small Texas town is investigated.

Investigators attempt to get to the bottom of a murder in an affluent, once-peaceful neighborhood.

The regrets of inmates are detailed via Scared Straight-type programs for teenagers and messages from prisoners recorded on personal video cameras.

Pensacola, Florida, New Year's Day 1985. The body of Tonya McKinley is found lying on the side of a city street.

Colorado Springs, Colorado, St. Patrick's Day 1987. The naked body of Darlene Krashoc is discovered by two patrol officers at 5.20am behind a restaurant.

A 17-year old girl arrives home in McCleary Washington and honks her car-horn. Her dad finds her distraught with duct tape around her mouth and her feet zip tied together.

How inmates treat first-timers and sex offenders.

Wedding preparations commence for a female inmate who's about to marry an alleged gang member, and an inmate is forced to choose between his crime family and his blood relatives in the series premiere of this look at life inside Suffolk County Correctional Facility in Riverhead, N.Y.

A husband is shot dead in his own bed. No one else in the house was hurt, not even his wife, who was sleeping beside him. Investigators were suspicious, but there were more surprises in store.

Steven B. Williams, a DJ with a golden voice, vanishes. The clue is wrapped in a napkin, tucked in a cabinet, hidden in a library.

A spotlight on a missing wife who was having an affair with a married guy.

A prolific bank robber is arrested; an embezzler vanishes; a stroke victim becomes an amnesiac. Also featured: the search for two teensagers who disappeared from a pyrotechnics display.

A wayward parolee harasses the FBI; a woman vanishes from a cruise ship; an alleged spontaneous human combustion; a psychic claims he can communicate with a dead sheriff.

An armoured-car robbery and a school bombing are featured. Also: A human skull is discovered beside a Mexican restaurant; a drug dealer is arrested.

A simian creature in Florida is examined; a man is arrested after murdering his whole family; evidence of reincarnation is explored; a suspected drug dealer becomes a fugitive.

A purported UFO sighting in Mexico City is explored; a suspect is charged with child molestation; two cases of abduction are probed; a body is discovered in the Chesapeake Bay.

A brother seeks a long-lost sister. Also: the Boston Strangler; two dead teenage runaways; speculations on the development of military aircraft.

Did Jennifer Corbin's desire to spend one last Christmas with her family lead to her murder?

After arguing with her new husband, Lisa Solomon leaves her home and vanishes into the cold night.

Could a killer's resentment of his family enjoying Thanksgiving together have lead to their murder?

Avis Banks is found dead in her garage. Police suspect that her fiance may not be all that he seems.

Toronto police are on the hunt for a serial killer who likes to dress up as Santa.