Season 18 |
| 1 :18x01 - The Outsiders (Sep/05/2006) | | Swingers: Marriages without boundaries. Also, ordinary moms dancing for $2,000 a night. And abstinent marriages. | |
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| 2 :18x02 - Medical Mysteries (Sep/06/2006) | | On this week's show, you'll hear the story of a beautiful woman for whom the phrase "something smells fishy" is not just some nose-wrinkling words, it's the agonizing story of her life. | |
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| 3 :18x03 - The Children Of 9/11 (Sep/07/2006) | | Meet the 9/11 Babies, Born After Losing Their Parents in 9/11. Also, Deep Brain Stimulation: One Switch Turns Depression Into Joy. | |
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| 4 :18x04 - Where Things Stand (Sep/11/2006) | | An overview on the war on terrorism, five years after the 9/11 attacks, hosted by Charles Gibson. Interviews include former White House counter-terrorism expert Richard Clarke and former New Jersey governor Thomas Kean, the chairman of the 9/11 commission. | |
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| 7 :18x07 - Basic Instincts (1) (Dec/06/2006) | | The first part of a five part series exploring the decision-making process focuses on strangers' reactions to situations like misbehaving children in a restaurant with passive parents, loud cellphone talkers, caregivers abusing the elderly people in their care, cab drivers who make antigay comments, and public displays of affection. | |
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| 8 :18x08 - North Korea: Inside the Shadows (Dec/08/2006) | | Diane Sawyer profiles North Korea's leader, Kim Jong Il, and visits North Korea herself, interviewing various people who live there, including rice farmers, factory workers, and a privileged athlete. | |
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| 9 :18x09 - Basic Instincts (2) (Dec/13/2006) | | Jay Schadler reports on the six degrees of separation phenomenon through an experiment involving four people: a businessman, a boxer, a Broadway dancer and a socialite. | |
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| 10 :18x10 - Basic Instincts (3) (Dec/20/2006) | | Game theory's principles are put into practice through two methods: strangers in Washington, D.C., trying to find one another and two groups of people trying to lose weight with different pressures on them. | |
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| 11 :18x11 - Basic Instincts (4) (Dec/27/2006) | | People's reactions to different situations are examined. The situations include intervening when someone is too drunk to drive, observing physical abuse in a public place, getting too much change from a cashier, and reacting to bigoted rants by taxi drivers. | |
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| 12 :18x12 - Basic Instincts (5) (Jan/03/2007) | | Chris Cuomo reports on how often people obey authority figures. Included is a replication of the famous Milgram experiment from the 1960s that have people administering increasing doses of shocks to strangers in another room for incorrect answers. | |
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| 13 :18x13 - Medical Mysteries (1) (Jan/10/2007) | | The first of a four-part series on medical mysteries features segments on stuttering, primordial dwarfism (dwarfs who aren't misshapen), and ectodermal dysplasia, a condition that causes people to have no fingerprints or sweat glands. | |
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| 25 :18x25 - Family Secrets (1) (Jun/26/2007) | | A series exploring family secrets begins with the case of Melanie McGuire, a New Jersey fertility-clinic nurse who was convicted in April 2007 of the 2004 murder of her husband, whose dismembered body was found in suitcases that were dumped in the Chesapeake Bay. Included: Cynthia McFadden interviews McGuire. | |
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| 26 :18x26 - Family Secrets (2) (Jul/03/2007) | | Subjects include Manvendra Singh Gohil, an Indian prince who was disowned by his family after disclosing his homosexuality; and Victoria Barr, a 19-year-old from Austin who was confined to her home for the first nine years of her life. Also: an update on a 2003 report on the case that led the Massachusetts legislature to fill in a loophole that enabled adults to take nude pictures of other adults without their permission or knowledge. | |
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| 27 :18x27 - Family Secrets (3) (Jul/10/2007) | | One director is eliminated, and the 10 remaining finalists screen the films they made in an appointed genre. | |
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| 29 :18x29 - Family Secrets (5) (Jul/24/2007) | | A report on teen pregnancy following two young women as they struggle with their decisions to put their unborn babies up for adoption. Cynthia McFadden reports from the Gladney Center for Adoption in Fort Worth. | |
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| 30 :18x30 - Family Secrets (6) (Jul/31/2007) | | The season finale includes a report on forced servitude in the U.S., focusing on one California community. Also: the case of Paige Birgfeld, a missing Colorado woman with ties to an online escort service; an Emmy-nominated 2006 report on spouse abuse. | |
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