Summary: A former NASA chief discusses how he and his 19-year-old son survived a tragic Alaskan plane crash in August 2010; when two Americans go missing in Panama, natives discover the dark side of a fun-loving bartender.

Summary: A former NASA chief discusses how he and his 19-year-old son survived a tragic Alaskan plane crash in August 2010; when two Americans go missing in Panama, natives discover the dark side of a fun-loving bartender.

Summary: A former NASA chief discusses how he and his 19-year-old son survived a tragic Alaskan plane crash in August 2010; when two Americans go missing in Panama, natives discover the dark side of a fun-loving bartender.

Summary: A former NASA chief discusses how he and his 19-year-old son survived a tragic Alaskan plane crash in August 2010; when two Americans go missing in Panama, natives discover the dark side of a fun-loving bartender.

Summary: A former NASA chief discusses how he and his 19-year-old son survived a tragic Alaskan plane crash in August 2010; when two Americans go missing in Panama, natives discover the dark side of a fun-loving bartender.

Summary: In the season premiere, the disappearance of two California teenage girls is investigated by Keith Morrison.

Summary: An Easter Sunday celebration turns tragic when a Nebraska family's parents are murdered. Correspondent Keith Morrison traces the search for justice in the cas

Summary: A lawyer is left blind after an intruder breaks into his home and murders his wife; the man, on a search for the truth, questions his troubled son as a potential suspect.

Summary: A lawyer is left blind after an intruder breaks into his home and murders his wife; the man, on a search for the truth, questions his troubled son as a potential suspect..

Summary: "Blind Justice" Keith Morrison investigates the murder of Susan Sutton and the blinding of her husband John in their Coral Gables, Florida home on August 22, 2004.

Summary: "Rescue on the Mountainside" Ann Curry reports on the August 9, 2010 plane crash in Alaska that killed Senator Ted Stevens and the heroic efforts of the crash survivors and rescuers who responded quickly to the crisis."Stealing Paradise" Kate Snow investigates the disappearance and murder of Cher Hughe, a resident on the tropical island Bocas del Toro off the coast of Panama.

Summary: Police solve a case of a teenager who disappeared from her friend's house before being found dead; a case of a love triangle involves an Air Force captain, his wife and her lover.

Summary: An interview with Mary Winkler, a preacher's wife who was convicted of killing her husband.

Summary: New details in the disappearance of 7-year-old Kyron Horman; eyewitnesses describe what they saw the day he went missing; a teenage girl is involved in a murder mystery after her older boyfriend is attacked and dies.

Summary: Prince Charles discusses his role as the Prince of Wales, his relationship with his sons, his media image and his attempts to combat global warming.

Summary: George Clooney embarks on a fact-finding mission across war-torn Sudan.

Summary: The remains of 11 female bodies are found in the desert outside of Albuquerque, N.M.

Summary: Previously unknown details of the Elizabeth Smart abduction; investigators fear the case of a murdered businessman may go unsolved despite their continued efforts.

Summary: The children of an Oklahoma pastor survive the robbery that took their parents' lives and observe the trials of those accused of committing the crime.

Summary: Ann Curry travels to the remote hills of Haiti with a group of American volunteers fighting against the cholera outbreak.

Summary: Undercover police operations in Las Vegas.

Summary: Investigators track down a suspect in the disappearance of a celebrity dog trainer.

Summary: Actor Michael Douglas discusses his battle with cancer; former President George H.W. Bush's foreign policy team; Tucson, Ariz., shooting survivor Suzi Hileman.

Summary: The investigation into the deaths of a couple at their Michigan home leads detectives to believe a family member is to blame.

Summary: “Written in Blood" Dennis Murphy reports from Michigan on the murder of two parents and the investigation into their son.

Summary: Hidden cameras reveal scams including a psychotherapist with a dark secret, fortune tellers and air duct cleaning companies.

Summary: “Bringing Brooke Home" Kate Snow reports on the disappearance and murder of Brooke Wilberger.

Summary: Aron Ralston, whose climbing-accident story inspired the movie ``127 Hours,'' talks about his life after the incident.

Summary: “Inconceivable" Meredith Vieira reports on a mother who discovered she was carrying another couple's embryo.“Internal Affairs" Josh Mankiewicz follows a cold case to its conclusion as the Los Angeles Police Department investigates its own officer for a murder.

Summary: A man is fatally poisoned by medication for a disease he didn't have, casting suspicion on his nurse wife.

Summary: A top-ranking officer in the Canadian military pleaded guilty to a number of crimes, from home invasions and lingerie theft to murder.

Summary: Actress Suzanne Somers speaks with Dr. Nancy Snyderman about alternative cancer treatments.

Summary: The rivalry between two teens turns deadly when threats escalate to violence; an Indiana mother is found asphyxiated in her basement gym.

Summary: The latest on the family situation of actor Charlie Sheen and his reaction to the media frenzy surrounding his lifestyle and his comments; new home videos reveal intimate details about Charlie, his girlfriends and his home.

Summary: Hidden cameras reveal how teens react to different bullying situations.

Summary: The tsunami in the Pacific Ocean; when two newlyweds on their honeymoon go diving on the Great Barrier Reef, but only one returns alive, authorities try to determine if it was an accident or murder.

Summary: A divorced mother hires someone to kill her ex-husband. Also, a San Diego mother tries to find the murderer of her daughter and and infant grandson.

Summary: A collection of people present for the wedding ceremony of Prince Charles and Princess Diana in 1981 look back on the historic event.

Summary: A young woman is found severely injured in the middle of the road, but her injuries have robbed her of her memory of what happened to her. Also, a woman kidnapped as a child and raised by her kidnappers searches for her real identity.

Summary: A young woman is found severely injured in the middle of the road, but her injuries have robbed her of her memory of what happened to her. Also, a woman kidnapped as a child and raised by her kidnappers searches for her real identity.

Summary: A young woman is found severely injured in the middle of the road, but her injuries have robbed her of her memory of what happened to her. Also, a woman kidnapped as a child and raised by her kidnappers searches for her real identity.

Summary: A young woman is found severely injured in the middle of the road, but her injuries have robbed her of her memory of what happened to her. Also, a woman kidnapped as a child and raised by her kidnappers searches for her real identity.

Summary: A young woman is found severely injured in the middle of the road, but her injuries have robbed her of her memory of what happened to her. Also, a woman kidnapped as a child and raised by her kidnappers searches for her real identity.

Summary: A man with a troubled past goes through an intense emotional therapy program.

Summary: A popular college freshman is gunned down in her car for no apparent reason. Police had no clues: no fingerprints, no information about trouble in Michelle O'Keefe's life.

Summary: The killing of 12 people in Aurora, Colorado during a screening of the new Batman movie. Also, A young college student vanishes late one night; ten years later, her mother's persistence and a new investigator help reveal the shocking truth about her sudden disappearance. Josh Mankiewicz reports.

Summary: A young woman from Southern California goes missing. Did she run away? Was she kidnapped? The police have suspects but no real evidence. It would take over nine years and the expertise of a cold case investigator, The Evidence Whisperer, to figure out what happened to Lynsie Ekelund. Josh Mankiewicz reports.

Summary: Some of the most amazing moments of athletic adventure ever caught on tape. More than extreme, these are life and death situations, and sometimes it is the spectators who are in peril. From mountaintops to ocean depths, you won't believe these people are alive. Also, Kate Snow reports live from the scene of the tragedy in Aurora, Colorado with the latest news. Survivors who were inside the movie theater speak out.

Summary: Tim Permenter calls 911 to report a horrible discovery; his girlfriend Karen Pannell, a one-time model and flight attendant, has been murdered in her kitchen. On the wall next to her body is a message written in her own blood - the letters R O C. What does it mean? Dennis Murphy Reports.

Summary: Lester Holt talks to Gabby Douglas during her first week after the London Games about her plans for the future; an undercover investigation of air conditioner repair companies; a look at how carnival games work; Hoda Kotb interviews Steve Harvey.

Summary: The heartbreaking case of Angie Dodge, an 18-year-old woman murdered in her home in Idaho Falls, Ind. Her mother fights to free the man (Chris Tapp) convicted of murdering her daughter. Keith Morrison reports.

Summary: A mother of three who was killed on a lonely dirt road just a mile from her home.

Summary: The latest in the story of Drew Peterson, who has been found guilty of murdering his ex-wife.

Summary: A fast-talking hood risks his life by going undercover in one of the country's roughest prisons to expose a suspected serial killer’s secrets.

Summary: A look is taken at a the story of an escaped convict and a deputy warden's wife who were found after a decade on the run and if she a hostage or accomplice.